CN202395641U - Mining explosion-proof frequency conversion speed regulating apparatus convenient for maintenance - Google Patents
Mining explosion-proof frequency conversion speed regulating apparatus convenient for maintenance Download PDFInfo
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- CN202395641U CN202395641U CN 201120540752 CN201120540752U CN202395641U CN 202395641 U CN202395641 U CN 202395641U CN 201120540752 CN201120540752 CN 201120540752 CN 201120540752 U CN201120540752 U CN 201120540752U CN 202395641 U CN202395641 U CN 202395641U
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- frequency converter
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- rhvc
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Abstract
The utility model discloses a mining explosion-proof frequency conversion speed regulating apparatus convenient for maintenance, comprising a housing and a frequency converter, wherein inside the housing there is provided a guide rail and a supporting frame slidably fitting with the guide rail, the frequency converter is a voltage type frequency converter, a filtering capacitor in a flat wave loop is fixedly mounted inside the housing, the rest components of the frequency converter are all mounted on the supporting frame, the frequency converter and a circuit portion fixedly mounted inside the housing are electrically connected with each other through a connector clip, the supporting frame is provided with a water cooling apparatus, inside the housing there is provided a cooling water pipe, and the cooling water pipe and water pipes in a water cooling apparatus are connected to form a cooling water loop. The mining explosion-proof frequency conversion speed regulating apparatus convenient for maintenance enables the frequency converter, the supporting frame and the cooling apparatus to form a modularized machine core and can be rapidly connected with the circuit portion inside the housing and the cooling water pipe through connection cooperation of the circuit portion and the cooling water pipe.
Description
Technical field
The utility model relates to a kind of RHVC, relates in particular to a kind of RHVC that adopts modularization frequency conversion movement.
Background technology
Existing RHVC generally comprises housing, is provided with frequency converter (also claiming the frequency conversion movement) and auxiliary circuit in the housing, also is provided with cooling device in order to dispel the heat.
Wherein said auxiliary circuit can be provided with as required, for example can be the commutation circuit that realizes that power frequency, frequency conversion are switched, or interface circuit etc., and frequency converter itself generally comprises:
Rectifier is used for power frequency supply is transformed to DC power supply.
Flat ripple loop; In the direct voltage behind rectifier rectification, contain multifrequency pulsating voltage, the pulsating current of inverter generation also makes the direct voltage change in addition; In order to suppress voltage fluctuation; Adopt flat ripple loop to absorb pulsating voltage (electric current), wherein the flat ripple loop of voltage frequency converter is to utilize capacitor filtering, and the flat ripple loop of current-mode converter is to utilize inductor filter.
Inverter is transformed to the AC power of the frequency that requires with direct current power, chien shih switching device conducting when determined, turn-offs and just can obtain three-phase alternating current and export.
Control circuit provides the loop of control signal to the main circuit of asynchronous motor power supply (voltage, frequency adjustable); " drive circuit " and " protective circuit " of inverter and motor that often comprise " velocity checking circuits " of " voltage, current detection circuit ", the motor of " computing circuit ", the main circuit of frequency, voltage, the control signal of computing circuit is amplified.
Frequency converter is not only major part in whole RHVC; And be to be prone to the loss part, need frequent maintenance or change parts, but frequency converter all is in the housing of fixing that is installed in RHVC in the prior art; Dismounting is very inconvenient, and efficient is very low.
The utility model content
The utility model provides a kind of RHVC of being convenient to safeguard with dismounting, through being convenient to the setting with main body cover separate modules frequency conversion movement, has improved the operating efficiency of safeguarding and changing parts.
A kind of mine explosion-suppression RHVC of being convenient to safeguard; Comprise shell and frequency converter; Described frequency converter comprises rectifier, flat ripple loop, inverter and control circuit, is provided with guide rail in the described shell, is provided with the bracing frame that is slidingly matched with this guide rail; Described frequency converter is a voltage frequency converter; Filter capacitor in its flat ripple loop is fixedly mounted in the described shell, and the remaining circuit element of frequency converter is installed on the described bracing frame, and described frequency converter carries out circuit with fixed installation circuit part in the enclosure through plug connector and is connected;
Described bracing frame is provided with water cooling plant; Be provided with cooling water pipe in the described shell; This cooling water pipe is pegged graft into the chilled(cooling) water return (CWR) with the water lines in the described water cooling plant, and wherein the position, water lines termination in the water cooling plant is connected with first joint, and the position, cooling water pipe termination in the shell is connected with second joint; Described first joint and second joint are pegged graft and are cooperated, and described second joint is installed on the fixed head in the enclosure.
With regard to the circuit theory and structure of whole frequency converter and mine explosion-suppression RHVC, can adopt prior art, in the flat ripple loop of voltage frequency converter; Filter capacitor is longer general useful life; Without frequent maintenance, and its weight is also bigger, and therefore fixed installation in the enclosure; It is more laborsaving that bracing frame is slided; Volume more is prone to miniaturization, and bracing frame can or push in the shell in placely along guide rail slip extraction shell together with frequency converter (except that filter capacitor) and cooling device, is convenient to the maintenance and the part replacement of frequency converter like this.
In order to form the chilled(cooling) water return (CWR); Water lines in the described water cooling plant is two terminations, and corresponding first joint also is two with spline structure, and in like manner the cooling water pipe in the shell also is two terminations; Corresponding second joint also is two with spline structure, pegs graft respectively with two first joints.
In order to realize the accurately in place of bracing frame, as preferred described shell internal fixation tapped guide pad is arranged, described bracing frame is provided with the adjustment leading screw with this guide pad threaded engagement, and should arrange along the length direction of described guide rail by the adjustment leading screw.When rotating the adjustment leading screw, can drive bracing frame and slide along guide rail.
As preferably, described guide rail comprises fixing canned paragraph and the active segment hinged with this canned paragraph in the enclosure, and the opening of shell is closed at both hinged positions.When the bracing frame in the needs taking-up shell, the upset active segment, active segment and canned paragraph be state basically linearly; Bracing frame marks shell along canned paragraph and active segment successively; Be more convenient for the operation, when bracing frame push shell in place after, dig active segment; Active segment is in the shell, is more conducive to save the space like this.
As preferably, described bracing frame bottom is provided with the wheel that cooperates with guide rail, so that the slip of realization bracing frame.
As preferably, be provided with holder in the described shell, the holder top has opening, and the sidewall of guide pad has the vertical gathering sill that cooperates with edge of opening, and guide pad is slided up and down, and is convenient to adjust and adjust the concentricity of leading screw.Guide pad has eccentric orfice, and this eccentric orfice inner wall belt has described internal thread.
Described bracing frame bottom is provided with the fixed mount of band through hole; Adjustment leading screw middle part penetrates this through hole; The through hole both sides are provided with the limiting component that is used to limit the axial motion of adjustment leading screw; Like nut, only allow adjustment leading screw relative fixed frame to rotate, when adjustment leading screw axial-movement, can drive fixed mount and drive support movements then.
Cooperate in order to realize pegging graft between described first joint and second joint; And realize sealing automatically when first joint separates with second joint; As preferably, described first joint is a tubular structure, is provided with first telescoping spool that is used to seal the first joint inner chamber in the tubular structure;
Described second joint comprises:
Tube connector; The opening of this tube connector is used to hold described first joint; And cooperate with described first joint sealing, be provided with second telescoping spool that is used to seal the tube connector inner chamber in the tube connector, when first joint inserts second joint; Described first telescoping spool and second telescoping spool hold out against each other, make the open and connection of first joint and tube connector inner chamber;
Run through described fixed head and with the outer tube of fixed head matched in clearance, it is inner that described tube connector is nested in this outer tube, is matched in clearance between tube connector outer wall and the outer sleeve inner wall, and is provided with the elastomeric element that is used to keep tube connector and outer tube relative angle;
Be fixed on the floating disc of described outer tube outer rim, floating disc has installing hole, and this floating disc and described fixed head surface gap cooperate, and cover the gap between fixed head and the outer tube fully;
Be used for described floating disc is limited to the fixture on described fixed head surface, described fixture is arranged in the installing hole of floating disc, this fixture and installing hole inwall matched in clearance.
As preferably, the opening inwall of described tube connector is provided with cannelure, is provided with sealing ring in this cannelure, and the outer wall of sealing circle and described first joint is sealed and matched.
As preferably, the screw that is used for support tube is fixed on the fixed head surface that described fixture comprises support tube and penetrates this support tube.The installing hole inwall matched in clearance of described support tube outer wall and floating disc (promptly realizing described fixture and installing hole inwall matched in clearance); Described support tube has the flanging that limits the installing hole edge, and floating disc is between this flanging and fixed head and be matched in clearance (being that described floating disc and described fixed head surface gap cooperate).
As preferably, the elastomeric element between described tube connector and the outer tube is the spring between tube connector and outer tube around the home, owing to be matched in clearance between tube connector outer wall and the outer sleeve inner wall; Therefore spring can keep tube connector and outer tube relative angle; Can be when tube connector is stressed with respect to outer tube deflection, in case but external force cancel, under the effect of spring; The relative angle of meeting recovery and outer tube, generally both coaxial arrangement.
Described tube connector outer wall and outer sleeve inner wall have the ledge structure that is used to limit the elastomeric element two ends, and described elastomeric element is pressed between these two ledge structures.
In order to keep the pretightning force of described elastomeric element; Described tube connector afterbody (end of first joint dorsad) passes outer tube, and has external screw thread, and this external screw thread position is equipped with the clamp nut that is used to stop outer tube; Promote outer tube through clamp nut, compress elastomeric element.
As preferably, the opening part of described first joint (towards an end of second joint) has the in-flanges structure, and described first telescoping spool comprises:
Be fixed on first baffle plate that has through hole and water hole in the first joint inner chamber;
Have the head of taper and first spool of shaft-like afterbody, described afterbody inserts in the through hole of described first baffle plate, the in-flanges contact seal of the conical surface of described head and first joint;
Be enclosed within first elastomeric element of the afterbody of described first spool, the two ends of first elastomeric element hold out against the head of described first baffle plate and described first spool respectively.
In first telescoping spool, for the sealing effectiveness of the in-flanges of the conical surface that guarantees head and first joint, as preferably, the conical surface of described head is provided with first sealing ring of annular, the in-flanges contact seal of this first sealing ring and first joint.First elastomeric element can make its in-flanges that holds out against first joint realize sealing to the head application of force of first spool; When the head of first spool is received the thrust from the outside; Separate with in-flanges, water can flow out the opening part of first joint via the water hole of first baffle plate.
Tube connector inside in described second joint has similar structure, is provided with ring-shaped step in the inner chamber of described tube connector, and described second telescoping spool comprises:
Be fixed on the second baffle that has through hole and water hole in the tube connector inner chamber;
Have the head of taper and second spool of shaft-like afterbody, described afterbody inserts in the through hole of described second baffle, the conical surface of described head and described ring-shaped step contact seal;
Be enclosed within second elastomeric element of the afterbody of described second spool, the two ends of second elastomeric element hold out against the head of described second baffle and described second spool respectively.
In second telescoping spool, for the conical surface that guarantees head and the sealing effectiveness of described ring-shaped step, as preferably, the conical surface of described head is provided with second sealing ring, this second sealing ring and the described ring-shaped step contact seal of annular.Second elastomeric element can make it hold out against described ring-shaped step to the head application of force of second spool and realize sealing; When the head of second spool is received the thrust from the outside; Separate with ring-shaped step, water can flow through the water hole of second baffle via the opening part of second joint.
Stable for the afterbody that keeps first spool and second spool is respectively equipped with the auxiliary fixing cover at the through hole position of described first baffle plate and second baffle, the stability when further guaranteeing first spool and second valve core movement.
In the utility model; When first joint and second joint grafting cooperation; The head mutual extrusion of first spool and second spool makes the open and connection of the inner chamber of first joint and second joint; First spool and second spool resetted under the effect of separately elastomeric element when first joint broke away from second joint, again closed inner chamber.In addition because floating disc and the cooperation of described fixed head surface gap and described fixed head and outer tube matched in clearance; Can make floating disc drive whole second joint and move, concentricity adjustment when being convenient to first joint and second joint grafting cooperation with respect to fixed head.Be matched in clearance between tube connector outer wall and the outer sleeve inner wall, tube connector is suitably swung with angular errors.Connecting portion adopts sealing ring to implement sealing in many places, and spool has self sealss property, has well solved the problem that leak in the water route, has prevented dangerous generation.
The utility model mine explosion-suppression RHVC is formed the modularization movement with frequency converter (except that filter capacitor), bracing frame and cooling device; Grafting through circuit and cooling water pipe cooperate realized with housing in circuit and the quick of cooling water pipe be connected; Make the convenient dismounting of modularization movement, improve maintenance efficiency.
Description of drawings
Fig. 1 is the internal structure sketch map of a kind of mine explosion-suppression RHVC of the utility model;
Fig. 2 is the interior guide pad of shell and the structural representation of the adjustment leading screw on the bracing frame.
Fig. 3 is the perspective view of water route connecting portion among Fig. 1;
Fig. 4 is the generalized section of first joint;
Fig. 5 is the generalized section of second joint;
Fig. 6 is the generalized section after first joint and second joint are pegged graft;
Fig. 7 is the generalized section at the installing hole position of floating disc in second joint;
Generalized section when Fig. 8 is subjected to displacement with respect to fixed head for the floating disc among Fig. 7.
Embodiment
Referring to Fig. 1, a kind of mine explosion-suppression RHVC of the utility model comprises shell, is provided with guide rail 3 in the shell, is provided with the bracing frame 2 that is slidingly matched with this guide rail 3.
Frequency converter comprises rectifier, flat ripple loop, inverter and control circuit, and frequency converter is a voltage frequency converter, and the filter capacitor in its flat ripple loop fixedly mounts in the enclosure, and the remaining circuit element of frequency converter is installed on the bracing frame 2.
Frequency converter carries out circuit with fixed installation circuit part in the enclosure through plug connector and is connected, visible plugging position 5 among the figure.
As preferably, guide rail 3 comprises fixing canned paragraph and the active segment (in figure omitted active segment) hinged with this canned paragraph in the enclosure, and the opening of shell is closed at both hinged positions.When the bracing frame 2 in the needs taking-up shell, the upset active segment, active segment and canned paragraph be state basically linearly; Bracing frame 2 marks shell along canned paragraph and active segment successively; Be more convenient for the operation, when bracing frame 2 push shell in place after, dig active segment; Active segment is in the shell, is more conducive to save the space like this.Bracing frame 2 bottoms are provided with the wheel that cooperates with guide rail 3, so that realize the slip of bracing frame 2.
Referring to Fig. 2, in order to realize the accurately in place of bracing frame 2, be provided with tapped guide pad 35 in the shell, bracing frame 2 is provided with the adjustment leading screw 32 with this guide pad 35 threaded engagement, and adjustment leading screw 32 is arranged along the length direction of guide rail 3.When rotating adjustment leading screw 32, can drive bracing frame 2 and slide along guide rail 3.
Visible among the figure, be provided with holder 33 in the shell, holder 33 tops have opening, and the sidewall of guide pad 35 has the vertical gathering sill 34 that cooperates with edge of opening, and guide pad 35 is slided up and down, and is convenient to adjust and adjust the concentricity of leading screw 32.Guide pad 35 has eccentric orfice, and this eccentric orfice inner wall belt has described internal thread.
Referring to accompanying drawing 3～5; Water route connecting portion 4 among Fig. 1; Comprise using and be connected first joint 41 and second joint 42 with two pipeline to be connected terminations (termination of the termination of pipeline 45 and pipeline 46); Wherein second joint 42 is installed on the fixed head 1, and pegging graft between first joint 41 and second joint 42 cooperates.
First joint 41 is a tubular structure, in be provided with first telescoping spool that is used to seal the first joint inner chamber; The opening part of first joint 41 (towards an end of second joint) has the in-flanges structure, and first telescoping spool comprises:
Be fixed on first baffle plate 414 that has through hole and water hole in first joint, 41 inner chambers;
Have the head of taper and first spool 411 of shaft-like afterbody; Its afterbody inserts in the through hole of first baffle plate 414; In order to keep the stable of afterbody, be provided with auxiliary fixing cover 415 at the through hole position of first baffle plate, the stability when further guaranteeing 411 motions of first spool; The conical surface of head is provided with first sealing ring, 412, the first sealing rings 412 of annular and the in-flanges contact seal of first joint 41;
Be enclosed within first elastomeric element 413 of the afterbody of first spool 411, specifically adopt spring, the two ends of first elastomeric element 413 hold out against the head of first baffle plate 414 and first spool 411 respectively.
Second joint 42 comprises:
Run through fixed head 1 and with the outer tube 422 of fixed head 1 matched in clearance; Tube connector 424 is nested in this outer tube 422 inside; Between tube connector 424 outer walls and outer tube 422 inwalls is matched in clearance; And be provided with the elastomeric element that is used to keep tube connector 424 and outer tube 422 relative angles, tube connector 424 is suitably swung with angular errors;
Be fixed on the floating disc 43 of outer tube 422 outer rims, floating disc 43 has installing hole, and this floating disc 43 cooperates with fixed head 1 surface gap, and covers the gap between fixed head 1 and the outer tube 422 fully, in case stopping leak reveals;
Be used for floating disc 43 is limited to the fixture on fixed head 1 surface, referring to Fig. 7, Fig. 8, the screw 44 that is used for support tube 47 is fixed on fixed head 1 surface that fixture comprises support tube 47 and penetrates this support tube 47.The installing hole inwall matched in clearance of support tube 47 outer walls and floating disc 43 has gap 48, and support tube 47 has the flanging that limits the installing hole edge, and floating disc 43 is between this flanging and fixed head 1 and be matched in clearance.
Elastomeric element between tube connector 424 and the outer tube 422 is the spring 423 between tube connector 424 and outer tube 422 around the home; Because between tube connector 424 and the outer tube 422 is matched in clearance; Therefore spring 423 can keep tube connector 424 and outer tube 422 relative angles, can be when tube connector 424 is stressed with respect to outer tube 422 deflections, in case but external force cancel; Under the effect of spring 423, can recover relative angle with outer tube 422.
Be provided with ring-shaped step in the inner chamber of tube connector 424, second telescoping spool comprises:
Be fixed on the second baffle that has through hole and water hole 426 in tube connector 424 inner chambers;
Have the head of taper and second spool, 427, the second spools, 427 afterbodys of shaft-like afterbody and insert in the through hole of second baffle 426, the conical surface of head is provided with second sealing ring of annular, second sealing ring and ring-shaped step contact seal;
Be enclosed within second elastomeric element 428 of the afterbody of second spool 427, specifically adopt spring, the two ends of second elastomeric element 428 hold out against the head of the second baffle 426 and second spool 427 respectively.
Referring to Fig. 6, when first joint 41 that is connected with pipeline 45 was pegged graft cooperation with second joint 42 that is connected with pipeline 46, first joint 41 inserted the tube connector inner chamber of second joint 42; And through the sealing ring sealing; The head mutual extrusion of first spool 411 and second spool 427 make the head of first spool 411 break away from the in-flanges of first joint 41, and the head of second spool 427 breaks away from ring-shaped step; Make the open and connection of inner chamber of first joint 41 and second joint 42; Promptly have self sealss property, well solved the problem that leak in the water route, prevented dangerous generation.
Referring to Fig. 7, Fig. 8; Because floating disc 43 cooperates and fixed head 1 and outer tube matched in clearance with fixed head 1 surface gap; Can make floating disc 43 drive whole second joint and move, concentricity adjustment when being convenient to first joint and second joint grafting cooperation with respect to fixed head 1.After comparison diagram 7, the visible floating disc 43 of Fig. 8 move down, the situation of change in gap 48.
In the utility model mine explosion-suppression RHVC, the bracing frame in the shell can be convenient to the maintenance and the part replacement of frequency converter along slide extraction shell or push in the shell in placely of guide rail like this together with frequency converter and cooling device.
Claims (10)
1. mine explosion-suppression RHVC of being convenient to safeguard; Comprise shell and frequency converter, described frequency converter comprises rectifier, flat ripple loop, inverter and control circuit, it is characterized in that; Be provided with guide rail in the described shell; Be provided with the bracing frame that is slidingly matched with this guide rail, described frequency converter is a voltage frequency converter, and the filter capacitor in its flat ripple loop is fixedly mounted in the described shell; And the remaining circuit element of frequency converter is installed on the described bracing frame, and described frequency converter carries out circuit with fixed installation circuit part in the enclosure through plug connector and is connected;
Described bracing frame is provided with water cooling plant; Be provided with cooling water pipe in the described shell; This cooling water pipe is pegged graft into the chilled(cooling) water return (CWR) with the water lines in the described water cooling plant, and wherein the position, water lines termination in the water cooling plant is connected with first joint, and the position, cooling water pipe termination in the shell is connected with second joint; Described first joint and second joint are pegged graft and are cooperated, and described second joint is installed on the fixed head in the enclosure.
2. the mine explosion-suppression RHVC of being convenient to safeguard as claimed in claim 1; It is characterized in that; Described shell internal fixation has tapped guide pad; Described bracing frame is provided with the adjustment leading screw with this guide pad threaded engagement, and should arrange along the length direction of described guide rail by the adjustment leading screw.
3. the mine explosion-suppression RHVC of being convenient to safeguard as claimed in claim 2 is characterized in that, described guide rail comprises fixing canned paragraph and the active segment hinged with this canned paragraph in the enclosure, and the opening of shell is closed at both hinged positions.
4. the mine explosion-suppression RHVC of being convenient to safeguard as claimed in claim 3 is characterized in that be provided with holder in the described shell, the holder top has opening, and the sidewall of guide pad has the vertical gathering sill that cooperates with edge of opening.
5. the mine explosion-suppression RHVC of being convenient to safeguard as claimed in claim 4 is characterized in that described guide pad has eccentric orfice, and this eccentric orfice inner wall belt has described internal thread.
6. the mine explosion-suppression RHVC of being convenient to safeguard as claimed in claim 5; It is characterized in that; Described bracing frame bottom is provided with the fixed mount of band through hole, and adjustment leading screw middle part penetrates this through hole, and the through hole both sides are provided with the limiting component that is used to limit the axial motion of adjustment leading screw.
7. like each described mine explosion-suppression RHVC of being convenient to safeguard of claim 1～6, it is characterized in that described first joint is a tubular structure, be provided with first telescoping spool that is used to seal the first joint inner chamber in the tubular structure;
Described second joint comprises:
Tube connector; The opening of this tube connector is used to hold described first joint; And cooperate with described first joint sealing, be provided with second telescoping spool that is used to seal the tube connector inner chamber in the tube connector, when first joint inserts second joint; Described first telescoping spool and second telescoping spool hold out against each other, make the open and connection of first joint and tube connector inner chamber;
Run through described fixed head and with the outer tube of fixed head matched in clearance, it is inner that described tube connector is nested in this outer tube, is matched in clearance between tube connector outer wall and the outer sleeve inner wall, and is provided with the elastomeric element that is used to keep tube connector and outer tube relative angle;
Be fixed on the floating disc of described outer tube outer rim, floating disc has installing hole, and this floating disc and described fixed head surface gap cooperate, and cover the gap between fixed head and the outer tube fully;
Be used for described floating disc is limited to the fixture on described fixed head surface, described fixture is arranged in the installing hole of floating disc, this fixture and installing hole inwall matched in clearance.
8. the mine explosion-suppression RHVC of being convenient to safeguard as claimed in claim 7; It is characterized in that; The screw that is used for support tube is fixed on the fixed head surface that described fixture comprises support tube and penetrates this support tube; The installing hole inwall matched in clearance of described support tube outer wall and floating disc, described support tube have the flanging that limits the installing hole edge, and floating disc is between this flanging and fixed head and be matched in clearance.
9. the mine explosion-suppression RHVC of being convenient to safeguard as claimed in claim 8 is characterized in that the opening part of described first joint has the in-flanges structure, and described first telescoping spool comprises:
Be fixed on first baffle plate that has through hole and water hole in the first joint inner chamber;
Have the head of taper and first spool of shaft-like afterbody, described afterbody inserts in the through hole of described first baffle plate, the in-flanges contact seal of the conical surface of described head and first joint;
Be enclosed within first elastomeric element of the afterbody of described first spool, the two ends of first elastomeric element hold out against the head of described first baffle plate and described first spool respectively.
10. the mine explosion-suppression RHVC of being convenient to safeguard as claimed in claim 9 is characterized in that, is provided with ring-shaped step in the inner chamber of described tube connector, and described second telescoping spool comprises:
Be fixed on the second baffle that has through hole and water hole in the tube connector inner chamber;
Have the head of taper and second spool of shaft-like afterbody, described afterbody inserts in the through hole of described second baffle, the conical surface of described head and described ring-shaped step contact seal;
Be enclosed within second elastomeric element of the afterbody of described second spool, the two ends of second elastomeric element hold out against the head of described second baffle and described second spool respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120540752 CN202395641U (en) | 2011-12-21 | 2011-12-21 | Mining explosion-proof frequency conversion speed regulating apparatus convenient for maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120540752 CN202395641U (en) | 2011-12-21 | 2011-12-21 | Mining explosion-proof frequency conversion speed regulating apparatus convenient for maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202395641U true CN202395641U (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120540752 Expired - Fee Related CN202395641U (en) | 2011-12-21 | 2011-12-21 | Mining explosion-proof frequency conversion speed regulating apparatus convenient for maintenance |
Country Status (1)
| Country | Link |
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| CN (1) | CN202395641U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437715A (en) * | 2011-12-21 | 2012-05-02 | 天津华宁电子有限公司 | Mining explosion-proof variable-frequency speed regulation device convenient to maintain |
| CN103051208A (en) * | 2013-01-29 | 2013-04-17 | 南车株洲电力机车研究所有限公司 | Frequency conversion power module of all-in-one machine of explosive-proof frequency conversion motor |
| CN106208730A (en) * | 2016-07-18 | 2016-12-07 | 钦州合创电气有限公司 | A kind of new type inverter of controlled rectifier |
-
2011
- 2011-12-21 CN CN 201120540752 patent/CN202395641U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437715A (en) * | 2011-12-21 | 2012-05-02 | 天津华宁电子有限公司 | Mining explosion-proof variable-frequency speed regulation device convenient to maintain |
| CN103051208A (en) * | 2013-01-29 | 2013-04-17 | 南车株洲电力机车研究所有限公司 | Frequency conversion power module of all-in-one machine of explosive-proof frequency conversion motor |
| CN103051208B (en) * | 2013-01-29 | 2014-11-19 | 南车株洲电力机车研究所有限公司 | Frequency conversion power module of all-in-one machine of explosive-proof frequency conversion motor |
| CN106208730A (en) * | 2016-07-18 | 2016-12-07 | 钦州合创电气有限公司 | A kind of new type inverter of controlled rectifier |
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