CN204436760U - A kind of pump pressure protective gear - Google Patents
A kind of pump pressure protective gear Download PDFInfo
- Publication number
- CN204436760U CN204436760U CN201420840202.2U CN201420840202U CN204436760U CN 204436760 U CN204436760 U CN 204436760U CN 201420840202 U CN201420840202 U CN 201420840202U CN 204436760 U CN204436760 U CN 204436760U
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- plc
- pump
- pump pressure
- output terminal
- frequency variator
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Abstract
The utility model discloses a kind of pump pressure protective gear; it comprises HMI, PLC, frequency variator, pump and warning device; described PLC primary data arranges the primary data of input end reception from HMI; the control signal output terminal of PLC is connected with frequency variator; the moment of torsion control output end of frequency variator is connected with pump; the real electrical machinery torque output of frequency variator is connected with PLC; the actual pump pressure output terminal of pump is connected with PLC; the real time data output terminal of PLC is connected with HMI, and the warning output terminal of PLC is connected with warning device.The utility model has the advantages such as reliability is high, limited field is wide, speed is fast, maintenance cost is low; preventative front-end control can be accomplished; be about to transfinite or transfinited carry out early warning in pump pressure; and can restrictive pump be pressed in safety protection range, allow operator can accomplish good counter-measure.
Description
Technical field
The utility model relates to a kind of pump pressure protective gear.
Background technique
As the visual plant of oil gas drilling, the safe operation problem of pump is paid much attention to always.Its overhigh pumping pressure may all bring great harm to personal security, high pressure pipe joint, pump body, downhole safety, gently then causes device damage, pump stall, increases oil-gas field development cost, heavy then bring personal safety accident or down-hole accident.So pump pressure protection is a very important problem in production process.
Existing pump pressure protective measure: adopt and install mechanical safety valve at pump discharge auxiliary piping, risen by small piston, jack-up cutting plate makes pin fracture emptying thus reach protection object.This protected-type reliability is low, poor accuracy, speed are slow, Recovery time is long, maintenance cost is high, brings constant very greatly to like this protection and maintenance.
Therefore develop a kind of novel safety valve and will become further important and urgent.
Model utility content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and greatly reduces financial cost, improves pressure break efficiency, shortens the pressure break cycle and can meet the pump pressure protective gear that economical and efficient develops the needs of oil-gas reservoir.
The purpose of this utility model is achieved through the following technical solutions: a kind of pump pressure protective gear; it comprises HMI, PLC, frequency variator, pump and warning device; described PLC primary data arranges the primary data of input end reception from HMI; the control signal output terminal of PLC is connected with frequency variator; the moment of torsion control output end of frequency variator is connected with pump; the real electrical machinery torque output of frequency variator is connected with PLC; the actual pump pressure output terminal of pump is connected with PLC; the real time data output terminal of PLC is connected with HMI, and the warning output terminal of PLC is connected with warning device.
The data that described primary data arranges input end input comprise pump pressure limits value and cylinder sleeve model.
Described cylinder sleeve model comprises velocity ratio, pump displacement, pump punching, pump liner size, discharge capacity efficiency.
Connected by EPA between described HMI and PLC.
Described frequency variator is medium voltage frequency converter.
The beneficial effects of the utility model are: (1) the utility model not only solves the technical problem that reliability is low, poor accuracy, speed are slow, Recovery time is long, maintenance cost is high of mechanical safety valve, and greatly reduce accident rate and high pressure to the damage of equipment by the protection of effective pump pressure, greatly reduce financial cost, improve pressure break efficiency, shorten the pressure break cycle, and the needs of economical and efficient exploitation oil-gas reservoir can be met; (2) the present invention is blended in pump control system, in conjunction with converter technique, and PLC control technology, network techniquies etc., realize the protection of full digital pump pressure; This protected-type reliability is high, limited field is wide, speed is fast, maintenance cost is low, can accomplish preventative front-end control; be about to transfinite or transfinited carry out early warning in pump pressure; and can restrictive pump be pressed in safety protection range, allow operator can accomplish good counter-measure.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1; a kind of pump pressure protective gear; it comprises HMI, PLC, frequency variator, pump and warning device; described PLC primary data arranges the primary data of input end reception from HMI; the control signal output terminal of PLC is connected with frequency variator; the moment of torsion control output end of frequency variator is connected with pump; the real electrical machinery torque output of frequency variator is connected with PLC; the actual pump pressure output terminal of pump is connected with PLC; the real time data output terminal of PLC is connected with HMI, and the warning output terminal of PLC is connected with warning device.
The data that described primary data arranges input end input comprise pump pressure limits value and cylinder sleeve model.
Described cylinder sleeve model comprises velocity ratio, pump displacement, pump punching, pump liner size, discharge capacity efficiency.
Connected by EPA between described HMI and PLC.
Described frequency variator is medium voltage frequency converter.
PLC is received from the pump pressure limits value arranged by HMI and cylinder sleeve model.
PLC gathers the real-time pump pressure value in a certain moment and real-time torque value, derives derivation torque value corresponding to current pump pressure by real-time pump pressure value.Real-time torque value and derivation torque value are compared, judge that the size of real-time torque value is whether in the certain limit of derivation torque value:
(1) if in real time torque value is in the certain limit of derivation torque value, then the moment of torsion carrying out next section with the torque value of Real-time Collection is preset;
(2) if in real time torque value is outside the certain limit of derivation torque value, then the moment of torsion carrying out next section with the derivation torque value of theory calculate is preset.
The utility model also has force value real-time judge function:
Judge whether force value reaches fault value:
(1) if do not reach fault value, force value real-time judge is proceeded;
(2) if reach fault value, then reduce pump punching, judge whether force value reaches shutdown value;
Judge whether force value reaches shutdown value:
(1) if do not reach shutdown value, then force value real-time judge is proceeded;
(2) if reach shutdown value, then emergency shutdown.
Judge whether force value reaches alarming value:
(1) if do not reach alarming value, then force value real-time judge is carried out;
(2) if reach alarming value, then alarm operation is carried out.
Described PLC can adopt the patent No. to be PLC plc in CN 202600428 U.
Claims (5)
1. a pump pressure protective gear; it is characterized in that: it comprises HMI, PLC, frequency variator, pump and warning device; described PLC primary data arranges the primary data of input end reception from HMI; the control signal output terminal of PLC is connected with frequency variator; the moment of torsion control output end of frequency variator is connected with pump; the real electrical machinery torque output of frequency variator is connected with PLC; the actual pump pressure output terminal of pump is connected with PLC; the real time data output terminal of PLC is connected with HMI, and the warning output terminal of PLC is connected with warning device.
2. a kind of pump pressure protective gear according to claim 1, is characterized in that: the data that described primary data arranges input end input comprise pump pressure limits value and cylinder sleeve model.
3. a kind of pump pressure protective gear according to claim 2, is characterized in that: described cylinder sleeve model comprises velocity ratio m, pump displacement, pump punching, pump liner size, discharge capacity efficiency.
4. a kind of pump pressure protective gear according to claim 1, be is characterized in that: connected by EPA between described HMI and PLC.
5. a kind of pump pressure protective gear according to claim 1, is characterized in that: described frequency variator is medium voltage frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420840202.2U CN204436760U (en) | 2014-12-26 | 2014-12-26 | A kind of pump pressure protective gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420840202.2U CN204436760U (en) | 2014-12-26 | 2014-12-26 | A kind of pump pressure protective gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204436760U true CN204436760U (en) | 2015-07-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420840202.2U Active CN204436760U (en) | 2014-12-26 | 2014-12-26 | A kind of pump pressure protective gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204436760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564635A (en) * | 2014-12-26 | 2015-04-29 | 四川宏华电气有限责任公司 | Pumping pressure protection device and pumping pressure protection method |
-
2014
- 2014-12-26 CN CN201420840202.2U patent/CN204436760U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564635A (en) * | 2014-12-26 | 2015-04-29 | 四川宏华电气有限责任公司 | Pumping pressure protection device and pumping pressure protection method |
| CN104564635B (en) * | 2014-12-26 | 2016-08-24 | 四川宏华电气有限责任公司 | A kind of pump pressure protection device and method |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |