CN203948318U - A kind of device that prevents centrifugal pump reversion - Google Patents
A kind of device that prevents centrifugal pump reversion Download PDFInfo
- Publication number
- CN203948318U CN203948318U CN201420382811.8U CN201420382811U CN203948318U CN 203948318 U CN203948318 U CN 203948318U CN 201420382811 U CN201420382811 U CN 201420382811U CN 203948318 U CN203948318 U CN 203948318U
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- CN
- China
- Prior art keywords
- centrifugal pump
- brake
- pushing mechanism
- pump
- reversion
- 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 - Fee Related
Links
Abstract
A kind of device that prevents centrifugal pump reversion, DCS system is connected with pushing mechanism, in DCS system, delay switch is set, pushing mechanism is connected with two connecting rods by contiguous block, two connecting rods are connected with brake hoop, in brake hoop, be provided with and brake the sheet of stopping, brake the sheet of stopping and match with Brake drum, Brake drum is connected with coupling.Pushing mechanism of the present utility model is controlled centrifugal pump after power-off to prevent its reversion by DCS system by delay switch is set.The utility model prevents that pump reversion from causing damage to pump structure after can be applicable to centrifugal pump power-off or fault, extend the working life of centrifugal pump and necessary electromotor, can substitute the safety check in pipeline after centrifugal pump, reduce pipe resistance, also reduce and change the impact of safety check on explained hereafter.
Description
Technical field
The utility model relates to centrifugal pump braking technology field, is specifically related to a kind of device that prevents its impeller reversion after centrifugal pump power-off or fault.
Background technique
In industrial production, for preventing in the situations such as power-off that centrifugal pump occurs to send out, turn, generally take the mode that safety check is installed at pump discharge to process, the water pump of some specific (special) requirements need be installed water hammer-resistant damping check valve, cost is high and belong to easily damaged parts, if must stop and just can carry out without standby pump replacing safety check, bring very big inconvenience to production.If check valve seal is tight or be damaged in producing, in the situations such as power-off, just likely make pump reversion, cause and have the mechanical seal damage that rotation direction requires, impeller lock jack panel and axle sleeve locknut are loosening, or cause the damage pump structures such as water hammer, even accidents caused.In addition, pump discharge can increase the resistance of fluid in pipeline after safety check is installed, and generally has 0.5 ~ 3mH
2o, overcomes the energy consumption that this resistance can increase pump.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of device that prevents centrifugal pump reversion is provided, and for the centrifugal pump after power-off provides reliable braking protection, can substitute pipeline safety check simultaneously, reduces pipe resistance.
The purpose of this utility model is achieved in that a kind of device that prevents centrifugal pump reversion, DCS system is connected with pushing mechanism, in DCS system, delay switch is set, pushing mechanism is connected with two connecting rods by contiguous block, two connecting rods are connected with brake hoop, in brake hoop, be provided with and brake the sheet of stopping, brake the sheet of stopping and match with Brake drum, Brake drum is connected with coupling.
Described pushing mechanism is Electrohydraulic push rod or cylinder or hydraulic jack.
Described brake hoop is arranged on centrifugal pump pedestal.
The device that prevents its impeller reversion that the utility model provides, has following beneficial effect:
1, install after this device, can make to prevent that pump reversion from causing damage to pump structure, extends the working life of centrifugal pump and necessary electromotor after centrifugal pump power-off or fault.
2, this installs the safety check in pipeline after alternative centrifugal pump, reduces pipe resistance, also reduces and changes the impact of safety check on explained hereafter.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Embodiment
Structure of the present utility model as shown in Figure 1, a kind of device that prevents centrifugal pump reversion, DCS system 8 is connected with pushing mechanism 1, in DCS system 8, delay switch is set, pushing mechanism 1 is connected with two connecting rods 2 by contiguous block, two connecting rods 2 are connected with brake hoop 3, brake hoop 3 is arranged on centrifugal pump pedestal 5, in brake hoop 3 inner sides, be provided with and brake the sheet 4 of stopping, braking the sheet 4 of stopping matches with Brake drum 6, Brake drum 6 is connected with coupling 7, by braking stop sheet 4 with the friction of Brake drum 6 to realize the braking of centrifugal pump.
Described pushing mechanism 1 is Electrohydraulic push rod or cylinder or hydraulic jack.
DCS system 8 in the utility model is a kind of control system of the prior art, data (as the stroke) centralized displaying of the corresponding data of pump motor (as rotating speed, power supply frequency etc.) and pushing mechanism can controlled on computer, operator can arrange or adjust these data parameters.
Illustrate: as A pump, install after this device that prevents centrifugal pump reversion, the stroke of pushing mechanism 1 is that 30mm can stop sheet 4 by Brake drum 6 lockings by braking after field adjustable, and then coupling 7 is shut down realize the function that prevents that centrifugal pump from reversing.
In actual mechanical process, in case of the reason centrifugal pump motor power such as power failure suddenly disappear, its running speed can reduce gradually until rotating speed is 0, and as prevented the device of centrifugal pump reversion without this, centrifugal pump may reverse; Install after this device that prevents centrifugal pump reversion, in DCS system, can show the rotating speed of centrifugal pump, in the process reducing gradually at rotating speed, DCS system can regulate the stroke of pushing mechanism 1 automatically, when degree of turning reduces gradually until while being 0, stroke, also by 0 to 30mm corresponding automatic increase, is realized rotating speed and is reduced gradually the stable cooperation increasing gradually with stroke, finally makes centrifugal pump shut down.In fact namely the rotating speed of pump and pushing mechanism are provided with to a little interlock system.Pushing mechanism 1 can be realized accurately and automatically being controlled by DCS system, and than operator field control, general operator precisely and in the situations such as power-off cannot put in place the short time.
Working principle of the present utility model is as follows: pushing mechanism 1 can move up and down its operation end by air pressure or oil pressure as power, and its stroke can fine adjustment.The operation end of realizing pushing mechanism 1 by DCS system 8 before centrifugal pump is opened moves downwards, and drivening rod 2 and brake hoop 3 motions make braking stop sheet 4 away from Brake drum 6, guarantee pump start or normal operation process in cannot contact with braking system.When pump need shut down because of power-off or other fault, by DCS system 8, time delay is set, in the upwards operation of the operation end of pushing mechanism 1 when being tending towards stopping gradually of coupling 7 rotating speeds, drivening rod 2 and brake hoop 3 motions make to brake the sheet 4 of stopping and move closer to and hold tightly Brake drum 6, finally make coupling 7 shut down, guarantee that pump is nonreversible.
The utility model is applicable to the braking of separate unit centrifugal pump to be controlled, and is also applicable to the integrated control of braking of many centrifugal pumps in chemical enterprise pump district.
Claims (3)
1. a device that prevents centrifugal pump reversion, it is characterized in that: DCS system (8) is connected with pushing mechanism (1), in DCS system (8), delay switch is set, pushing mechanism (1) is connected with two connecting rods (2) by contiguous block, two connecting rods (2) are connected with brake hoop (3), in brake hoop (3) inner side, be provided with and brake the sheet (4) of stopping, brake the sheet (4) of stopping and match with Brake drum (6), Brake drum (6) is connected with coupling (7).
2. the device that prevents centrifugal pump reversion according to claim 1, is characterized in that: described pushing mechanism (1) is Electrohydraulic push rod or cylinder or hydraulic jack.
3. the device that prevents centrifugal pump reversion according to claim 1, is characterized in that: described brake hoop (3) is arranged on centrifugal pump pedestal (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420382811.8U CN203948318U (en) | 2014-07-11 | 2014-07-11 | A kind of device that prevents centrifugal pump reversion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420382811.8U CN203948318U (en) | 2014-07-11 | 2014-07-11 | A kind of device that prevents centrifugal pump reversion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948318U true CN203948318U (en) | 2014-11-19 |
Family
ID=51890355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420382811.8U Expired - Fee Related CN203948318U (en) | 2014-07-11 | 2014-07-11 | A kind of device that prevents centrifugal pump reversion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948318U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523392A (en) * | 2016-10-21 | 2017-03-22 | 江苏大学镇江流体工程装备技术研究院 | Brake apparatus for pump |
-
2014
- 2014-07-11 CN CN201420382811.8U patent/CN203948318U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523392A (en) * | 2016-10-21 | 2017-03-22 | 江苏大学镇江流体工程装备技术研究院 | Brake apparatus for pump |
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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 |
Granted publication date: 20141119 Termination date: 20200711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |