CN202132593U - Temperature and pressure protection type flow controller - Google Patents
Temperature and pressure protection type flow controller Download PDFInfo
- Publication number
- CN202132593U CN202132593U CN 201120234168 CN201120234168U CN202132593U CN 202132593 U CN202132593 U CN 202132593U CN 201120234168 CN201120234168 CN 201120234168 CN 201120234168 U CN201120234168 U CN 201120234168U CN 202132593 U CN202132593 U CN 202132593U
- Authority
- CN
- China
- Prior art keywords
- temperature
- pressure
- digital controller
- flow controller
- protection type
- 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
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
- G05D7/0635—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Flow Control (AREA)
Abstract
The utility model relates to a flow controller, in particular to a temperature and pressure protection type flow controller for liquid or gas flow control. The following technical scheme is adopted: the temperature and pressure protection type flow controller is characterized in that a temperature sensor and a pressure sensor are arranged on a channel pipe at the outlet of a regulating valve, and the temperature sensor and the pressure sensor transmit signals to a multivariate digital regulator through cables. By adopting the scheme, the utility model aims to solve the problems of the conventional flow controller, and provides the new flow controller which can control flow in normal conditions, and can close or open a valve in case of abnormal temperature or pressure.
Description
Technical field
The utility model relates to a kind of flow dontroller, is meant the temperature and pressure protection type flow dontroller that is used for liquid or gas flow control usefulness especially.
Background technique
Flow dontroller is widely used in the flow control system in various fields as a kind of instrument product.Common flow dontroller only is used for the Flow-rate adjustment of medium.When the pressure and temperature abnormal conditions in actual conditions, occurring, common flow dontroller can not cut out or open valve when pipeline pressure or temperature anomaly, can not play urgent protective action.And in automation control system, realize monitoring if desired to the temperature and pressure parameter, and independent pressure transmitter and temperature transmitter generally need be installed again, the instrumentation tap poor compatibility is used very inconvenient.
Summary of the invention
The purpose of the utility model is for solving the problems referred to above that existing normal flow amount controller exists, a kind of control flow rate under normal circumstances is provided, under the operating mode of temperature or pressure anomaly, can closing or open the flow dontroller of valve.
Realize above-mentioned purpose; The utility model adopts following technological scheme: a kind of temperature and pressure protection type flow dontroller; Include tunnel tube, flowmeter, modulating valve, electric actuator, multivariable Digital Controller, wherein flowmeter and modulating valve are arranged on the tunnel tube; And flowmeter is positioned at the suction side of modulating valve; Electric actuator is arranged on the modulating valve top, the inner integrated multivariable Digital Controller that is provided with of electric actuator, and flowmeter is transmitted in the multivariable Digital Controller to signal through cable; It is characterized in that: the tunnel tube that is positioned at the modulating valve outlet port is provided with temperature transducer and pressure transducer, and said temperature transducer and pressure transducer are transmitted in the multivariable Digital Controller to signal through cable.
Through adopting such scheme; The beneficial effect of the utility model is: because a plurality of instrument such as flowmeter, modulating valve, electric actuator, multivariable Digital Controller, temperature transducer, pressure transducer are integrated; The instrumentation tap compatibility is good, conveniently uses and debugs.(2) adopted the multivariable Digital Controller, can when flow is realized quantitatively control, realize limit protection pressure and temperature.The use of temperature and pressure protection type flow dontroller can be played crucial protective action for the relevant device on instrument, valve and the pipeline in the automation control system.
The further setting of the utility model is: their cables of being connected separately of described flowmeter, temperature transducer and pressure transducer are connected on the multivariable Digital Controller through the cross cable joining, and said multivariable Digital Controller is incoming pressure, temperature and flow three road signals simultaneously.
Below in conjunction with accompanying drawing the utility model embodiment is done and to further describe.
Description of drawings:
Fig. 1 is the utility model embodiment 1 a general assembly structural representation;
Fig. 2 is the utility model embodiment 2 a general assembly structural representation.
Embodiment
As shown in Figure 1; A kind of temperature and pressure protection type flow dontroller comprises flowmeter 1, modulating valve 2, electric actuator 3, multivariable Digital Controller 4, cross cable joining 5, temperature transducer 6, pressure transducer 7, cable 8, tunnel tube 9, and cable 8 is delivered to multivariable Digital Controller 4 with cross cable joining 5 with flowmeter 1, temperature transducer 6 and pressure transducer 7 threes' change feed signals.In normal operation, multivariable Digital Controller 4 is set with the setting flow value that presets, when flowing through medium in the instrument runner; The flow of flowmeter 1 collection medium; Multivariable Digital Controller 4 is delivered in the actual flow signal change, and the setting flow value inner with it compares, when actual flow is less than normal or bigger than normal; Multivariable Digital Controller 4 meeting control electric actuators 3 adjustment modulating valve 2 apertures become big or diminish, thereby the adjusting actual flow is consistent with the flow value of setting.
Multivariable Digital Controller 4 also receives the signal from temperature transducer 6 and pressure transducer 7 simultaneously, compares with the temperature and pressure limiting value of its inner setting, if in normal range (NR), flow dontroller is realized constant flow rate control function; If it is unusual; Promptly measure temperature or overpressure or cross when low when temperature transducer 6 or pressure transducer 7; Multivariable Digital Controller 4 can control valve standard-sized sheet or complete shut-downs, and the effect of equipment such as pump on the protection pipeline, instrument, valve is played in the disabler of constant flow rate control simultaneously.
Another mode of execution of the utility model is as shown in Figure 2, and pressure transducer 7 is installed on away from the flow dontroller outlet end, is fit to remote pressure point, i.e. pressure transducer 7 and flow dontroller partial installation.
Claims (2)
1. temperature and pressure protection type flow dontroller; Include tunnel tube, flowmeter, modulating valve, electric actuator, multivariable Digital Controller, wherein flowmeter and modulating valve are arranged on the tunnel tube; And flowmeter is positioned at the suction side of modulating valve; Electric actuator is arranged on the modulating valve top, the inner integrated multivariable Digital Controller that is provided with of electric actuator, and flowmeter is transmitted in the multivariable Digital Controller to signal through cable; It is characterized in that: the tunnel tube that is positioned at the modulating valve outlet port is provided with temperature transducer and pressure transducer, and said temperature transducer and pressure transducer are transmitted in the multivariable Digital Controller to signal through cable.
2. temperature and pressure protection type flow dontroller according to claim 1; It is characterized in that: their cables of being connected separately of described flowmeter, temperature transducer and pressure transducer are connected on the multivariable Digital Controller through the cross cable joining, and said multivariable Digital Controller is incoming pressure, temperature and flow three road signals simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120234168 CN202132593U (en) | 2011-07-05 | 2011-07-05 | Temperature and pressure protection type flow controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120234168 CN202132593U (en) | 2011-07-05 | 2011-07-05 | Temperature and pressure protection type flow controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202132593U true CN202132593U (en) | 2012-02-01 |
Family
ID=45521360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120234168 Expired - Fee Related CN202132593U (en) | 2011-07-05 | 2011-07-05 | Temperature and pressure protection type flow controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202132593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387221A (en) * | 2015-12-10 | 2016-03-09 | 成都德善能科技有限公司 | Flow controlling butterfly valve |
-
2011
- 2011-07-05 CN CN 201120234168 patent/CN202132593U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105387221A (en) * | 2015-12-10 | 2016-03-09 | 成都德善能科技有限公司 | Flow controlling butterfly valve |
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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: 20120201 Termination date: 20150705 |
|
| EXPY | Termination of patent right or utility model |