CN203374461U - Frequency-conversion pressurizing control device of geothermal well - Google Patents
Frequency-conversion pressurizing control device of geothermal well Download PDFInfo
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- CN203374461U CN203374461U CN201320366408.1U CN201320366408U CN203374461U CN 203374461 U CN203374461 U CN 203374461U CN 201320366408 U CN201320366408 U CN 201320366408U CN 203374461 U CN203374461 U CN 203374461U
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Abstract
The utility model discloses a frequency-conversion pressurizing control device of a geothermal well. The frequency-conversion pressurizing control device comprises a submerged pump and a heat conveying pipeline, wherein one end of the heat conveying pipeline is connected with the submersed pump. The other end of the heat conveying pipeline is connected into a recharge well. A heat exchanger unit is arranged on the heat conveying pipeline and is formed by connecting multiple heat exchangers in series. The heat source inlet end of the heat exchanger unit is provided with a first pressure transmitter and a secondary pressurizing pump, and the heat source outlet end of the heat exchanger unit is provided with a secondary pressure transmitter. The frequency-conversion pressurizing control device further comprises a control module used for controlling the secondary pressurizing pump to work. The control module comprises a PLC unit and a frequency converter. The first pressure transmitter is electrically connected with the PLC unit through an analog-digital conversion unit. The second pressure transmitter is electrically connected with the PLC unit through the analog-digital conversion unit. The PLC unit is electrically connected with the drive terminal of the frequency converter through the analog-digital conversion unit, and the output terminal of the frequency converter is electrically connected with the secondary pressurizing pump. According to the frequency-conversion pressurizing control device of the geothermal well, the heat conveying pipeline has the advantages of being stable in flow, high in security coefficient and long in service life.
Description
Technical field
The utility model belongs to underground heat conveying technology field, particularly relates to a kind of geothermal well frequency conversion pressurized control device.
Background technique
In recent years, increasingly serious along with energy problem, underground heat more and more is subject to people's approval as a kind of clean energy; At present, traditional geothermal energy resources utilization is mainly that the hot water in geothermal well is extracted out by submersible pump, after then utilizing heat exchanger to realize heat exchange, by cooled geothermal water reinjection in recharge well; But find in long-term practice, because lift and flow that submersible pump provides are limited, simultaneously along with the increase with length of pipe that increases of heat exchanger quantity, resistance in heat supply pipeline constantly increases, therefore in use, underground heat production flow amount often occurring unstable, thereby causes the low defect of heat exchange efficiency; In order to solve the problems of the technologies described above, traditional solution is constantly to increase the diving lift of pump, consequently cause the working efficiency of submersible pump lower, long-term high load causes sharply reduce its working life simultaneously, and the work of high load has simultaneously also brought great potential safety hazard to heat supply pipeline.
Summary of the invention
Goal of the invention of the present utility model is to overcome the deficiencies in the prior art, proposes that a kind of stability of flow, safety coefficient are high, the geothermal well frequency conversion pressurized control device of long service life.
The technological scheme that the utility model is taked for the technical problem existed in the solution known technology is:
A kind of geothermal well frequency conversion pressurized control device, comprise the heat supply pipeline that the submersible pump that is installed in geothermal well and an end are connected with described submersible pump; In the other end access recharge well of described heat supply pipeline; On described heat supply pipeline, heat exchanger unit is installed, described heat exchanger unit is composed in series by a plurality of heat exchangers; Thermal source entry end at described heat exchanger unit is equipped with the first pressure transmitter and secondary pressing pump, at the thermal source outlet end of described heat exchanger unit, the second pressure transmitter is installed; Also comprise for controlling the control module of described secondary pressurized pump work; Described control module comprises PLC unit and frequency variator; Described the first pressure transmitter is electrically connected to the PLC unit by AD conversion unit, described the second pressure transmitter is electrically connected to the PLC unit by AD conversion unit, described PLC unit is electrically connected to the drive terminal of described frequency variator by D/A conversion unit, and the Out let of described frequency variator is electrically connected to described secondary pressing pump.
As preferably, the utility model has also adopted following technological scheme:
Described heat exchanger is plate type heat exchanger.
Described control module also comprises the man-machine interaction unit be electrically connected to described PLC unit.
Advantage and the good effect that the utlity model has are: the utility model utilizes the first pressure transmitter and the second pressure transmitter to extract respectively the pressure of supply water data at heat exchanger unit two ends, then utilize control module to judge above-mentioned data analysis, and then be installed on the adjusting of the secondary pressing pump realization of heat exchanger unit thermal source entry end to pressure of supply water by control; Guaranteed the stability of heat supply pipeline private water supply pressure; Because heat supply pipeline private water supply pressure is stablized, therefore improved the safety coefficient of heat supply pipeline, extended the working life of heat supply pipeline.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1, control module; 2, the first pressure transmitter; 3, secondary pressing pump; 4, geothermal well; 5, heat exchanger unit; 6, the second pressure transmitter; 7, recharge well.
Embodiment
For further understanding model utility content of the present utility model, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1, a kind of geothermal well frequency conversion pressurized control device comprises: control module 1, the first pressure transmitter 2, secondary pressing pump 3, heat exchanger unit 5, the second pressure transmitter 6, submersible pump and heat supply pipeline; Wherein: submersible pump is installed in geothermal well 4, and an end of heat supply pipeline is connected with submersible pump, and a termination of heat supply pipeline enters in recharge well 7; Heat exchanger unit 5 is installed on heat supply pipeline; Generally, as required, heat exchanger unit 5 is composed in series by a plurality of heat exchangers; In this specific embodiment, heat exchanger unit 5 is composed in series by a plurality of plate type heat exchangers; The first pressure transmitter 2 and secondary pressing pump 3 are installed on the thermal source entry end of heat exchanger unit 5, and the second pressure transmitter 6 is installed on the thermal source outlet end of heat exchanger unit 5; Control module 1 is for controlling the working state of secondary pressing pump 3, and control module 1 comprises PLC unit and frequency variator; The first pressure transmitter 2 is electrically connected to the PLC unit by AD conversion unit, the second pressure transmitter 6 is electrically connected to the PLC unit by AD conversion unit, the PLC unit is electrically connected to the drive terminal of frequency variator by D/A conversion unit, and the Out let of frequency variator is electrically connected to secondary pressing pump 3; For the ease of operation, at the I/O of PLC unit port, also be electrically connected with man-machine interaction unit.
Above a kind of embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (3)
1. a geothermal well frequency conversion pressurized control device, comprise the heat supply pipeline that the submersible pump that is installed in geothermal well and an end are connected with described submersible pump; In the other end access recharge well of described heat supply pipeline; On described heat supply pipeline, heat exchanger unit is installed, described heat exchanger unit is composed in series by a plurality of heat exchangers; It is characterized in that: the thermal source entry end at described heat exchanger unit is equipped with the first pressure transmitter and secondary pressing pump, at the thermal source outlet end of described heat exchanger unit, the second pressure transmitter is installed; Also comprise for controlling the control module of described secondary pressurized pump work; Described control module comprises PLC unit and frequency variator; Described the first pressure transmitter is electrically connected to the PLC unit by AD conversion unit, described the second pressure transmitter is electrically connected to the PLC unit by AD conversion unit, described PLC unit is electrically connected to the drive terminal of described frequency variator by D/A conversion unit, and the Out let of described frequency variator is electrically connected to described secondary pressing pump.
2. geothermal well frequency conversion pressurized control device according to claim 1, it is characterized in that: described heat exchanger is plate type heat exchanger.
3. geothermal well frequency conversion pressurized control device according to claim 1 and 2, it is characterized in that: described control module also comprises the man-machine interaction unit be electrically connected to described PLC unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320366408.1U CN203374461U (en) | 2013-06-24 | 2013-06-24 | Frequency-conversion pressurizing control device of geothermal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320366408.1U CN203374461U (en) | 2013-06-24 | 2013-06-24 | Frequency-conversion pressurizing control device of geothermal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203374461U true CN203374461U (en) | 2014-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320366408.1U Expired - Lifetime CN203374461U (en) | 2013-06-24 | 2013-06-24 | Frequency-conversion pressurizing control device of geothermal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203374461U (en) |
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2013
- 2013-06-24 CN CN201320366408.1U patent/CN203374461U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |