CN214372824U - On-line monitoring device for orifice valve performance - Google Patents
On-line monitoring device for orifice valve performance Download PDFInfo
- Publication number
- CN214372824U CN214372824U CN202022674513.4U CN202022674513U CN214372824U CN 214372824 U CN214372824 U CN 214372824U CN 202022674513 U CN202022674513 U CN 202022674513U CN 214372824 U CN214372824 U CN 214372824U
- Authority
- CN
- China
- Prior art keywords
- outlet
- differential pressure
- pressure transmitter
- inlet
- valve
- 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.)
- Active
Links
- 238000012806 monitoring device Methods 0.000 title claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 23
- 230000008859 change Effects 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 description 9
- 230000008676 import Effects 0.000 description 7
- 239000011148 porous material Substances 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 230000001154 acute effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000003745 diagnosis Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Measuring Volume Flow (AREA)
Abstract
本实用新型公开了一种孔板阀性能在线监测装置，在线监测装置包括开设在所述孔板阀上游的进口、开设在孔板阀下游的第一出口和第二出口、设置在所述进口与第一出口之间的第一差压变送器、设置在所述进口与第二出口之间的第二差压变送器以及与所述第一差压变送器和第二差压变送器连接的控制机构，所述第二出口位于所述第一出口与所述孔板阀之间，所述第一差压变送器用于监测所述进口与第一出口间的差压△P，所述第二差压变送器监测进口与第二出口间的差压△P1，所述控制机构用于监测△P1/△P的值，并在△P1/△P值的变化程度超过设定的阈值时进行预警。本实用新型的孔板阀性能在线监测装置，实现了孔板阀性能的在线监测和故障预警。
The utility model discloses an on-line monitoring device for the performance of an orifice valve. The on-line monitoring device comprises an inlet set upstream of the orifice valve, a first outlet and a second outlet set on the downstream of the orifice valve, and a first outlet and a second outlet set on the downstream of the orifice valve. a first differential pressure transmitter with the first outlet, a second differential pressure transmitter provided between the inlet and the second outlet, and the first differential pressure transmitter and the second differential pressure a control mechanism connected to a transmitter, the second outlet is located between the first outlet and the orifice valve, and the first differential pressure transmitter is used to monitor the differential pressure between the inlet and the first outlet ΔP, the second differential pressure transmitter monitors the differential pressure ΔP1 between the inlet and the second outlet, the control mechanism is used to monitor the value of ΔP1/ΔP, and the change in the value of ΔP1/ΔP An early warning is issued when the level exceeds the set threshold. The on-line monitoring device for the performance of the orifice plate valve of the utility model realizes the on-line monitoring of the performance of the orifice plate valve and the early warning of faults.
Description
Technical Field
The patent of the utility model belongs to the technical field of the industry measurement, like the flow measurement of energy or chemical industry, concretely relates to orifice valve performance on-line monitoring device.
Background
The orifice plate flowmeter formed by matching the orifice plate flowmeter throttling device (orifice plate valve) with the differential pressure transmitter can measure the flow of liquid, steam and gas, and is widely applied to the occasions of petroleum, chemical engineering, metallurgy, electric power, light industry and the like. The orifice plate flowmeter is also called as differential pressure type flowmeter, is composed of primary detection piece (orifice valve of throttling piece) and secondary device (differential pressure transmitter and flow indicator), and can be extensively used for measuring flow of gas, steam and liquid.
The existing orifice plate flowmeter applied to the industrial field is transported to a verification center for verification after the flowmeter factory finishes processing, and can be loaded to the industrial field for use after the verification is qualified. However, the performance of the orifice valve of the orifice plate flowmeter can change in the use process, such as the acute angle of the head-on surface, the flatness and the roughness of the orifice plate. These variations can lead to the presence and increase of metering errors, which, if not monitored and handled, can have a significant impact on the safety, reliability, stability, and economics of equipment and operations.
In the prior art, there are generally two methods for performance monitoring and fault diagnosis of orifice plate flow meters: one is to replace the metal pipe at a certain period, but the replacement cost is high, the period is long, and a lot of loss which is difficult to measure is caused in the period; the other method is to perform disassembly verification on the flow meter periodically, for example, the flow meter is verified by the overhaul of a nuclear power plant, but the verification period is often difficult to meet the requirements of a high-precision application field, and the performance change of a specific flow meter in the use process cannot be tracked. Therefore, a technical scheme for monitoring and diagnosing the performance of the orifice plate flowmeter, particularly the orifice plate valve, on line is needed.
Disclosure of Invention
In view of this, in order to overcome the defects of the prior art and to achieve the above object, the present invention aims to provide an online monitoring device for the performance of a pore plate valve, which can realize online monitoring of the performance of the pore plate valve.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an online monitoring device of orifice valve performance, online monitoring device includes the import of seting up in the orifice valve upper reaches, set up in the first export and the second export of orifice valve low reaches, set up in first differential pressure transmitter between import and the first export, set up in the second differential pressure transmitter between import and the second export and with the control mechanism that first differential pressure transmitter and second differential pressure transmitter are connected, the second export is located between the first export with the orifice valve, first differential pressure transmitter is used for monitoring the differential pressure delta P between import and the first export, the differential pressure delta P1 between second differential pressure transmitter monitoring import and the second export, control mechanism is used for monitoring the value of delta P1/. DELTA.P to early warning when the change degree of delta P1/. DELTA.P value exceeds the threshold value that sets for.
Through first differential pressure transmitter and orifice plate valve combination orifice plate flow meter who forms is prior art, the utility model discloses on such prior art, newly seted up the second export and increased second differential pressure transmitter between import and second export, through the change of monitoring delta P1/delta P value, realize on-line monitoring and the fault early warning to the orifice plate valve performance, provide the guarantee for industrial field safety, high-efficient, economic operation, saved manpower, financial resources and material resources.
According to some preferred implementation aspects of the utility model, the internal diameter of pipeline is D, the distance between import and the orifice valve is D, the distance between first export and the orifice valve is D/2.
According to some preferred aspects of the invention, the distance between the second outlet and the orifice valve is D/4. The second outlet is arranged at D/4 of the downstream of the orifice valve, and the second differential pressure transmitter is arranged between the point and the inlet, so that the detection result is more accurate and stable relative to the outlets arranged at other points, and the fluctuation is small.
According to some preferred embodiments of the present invention, the opening dimension of the second outlet is the same as the opening dimension of the first outlet.
According to some preferred embodiments of the invention, the threshold value set for the degree of change is 0.2% to 0.5%.
According to some preferred aspects of the invention, the threshold value set for the degree of change is 0.2%.
Due to the adoption of the technical scheme as above, compare with prior art, the utility model discloses an useful part lies in: the utility model provides a pore plate valve performance on-line monitoring device compares current can only confirm the orifice plate through the maintenance of disassembling and whether have the problem to the in-process existence that the disassembling was packed back causes the possibility of further error, the technical scheme in the utility model realize that the footpath is apart from getting the online monitoring and the fault early warning of pressure orifice plate flowmeter orifice plate region promptly orifice plate valve performance, provide the guarantee for industrial field safety, high-efficient, economic operation, saved manpower, financial resources and material resources.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of an online performance monitoring device for a perforated plate valve according to a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of calculation results at different reynolds numbers in the preferred embodiment 2 of the present invention;
in the attached drawing, a pipeline-1, a perforated plate valve-2, an inlet-3, a first outlet-4, a second outlet-5, a first differential pressure transmitter-6 and a second differential pressure transmitter-7 are arranged.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
As shown in fig. 1, the device for on-line monitoring the performance of the orifice valve 2 of the present embodiment comprises an inlet 3 opened at the upstream of the orifice valve 2, a first outlet 4 and a second outlet 5 opened at the downstream of the orifice valve 2, the differential pressure monitoring device comprises a first differential pressure transmitter 6 arranged between an inlet 3 and a first outlet 4, a second differential pressure transmitter 7 arranged between the inlet 3 and a second outlet 5, and a control mechanism connected with the first differential pressure transmitter 6 and the second differential pressure transmitter 7, wherein the second outlet 5 is positioned between the first outlet 4 and an orifice valve 2, the first differential pressure transmitter 6 is used for monitoring a differential pressure delta P between the inlet 3 and the first outlet 4, the second differential pressure transmitter 7 is used for monitoring a differential pressure delta P1 between the inlet 3 and the second outlet 5, and the control mechanism is used for monitoring a value of delta P1/. delta.P and giving an early warning when the change degree of the delta P1/. delta.P exceeds a set threshold value. The threshold value of the degree of change in this example was set to 0.2%.
The opening dimension of the second outlet 5 is the same as the opening dimension of the first outlet 4. In this embodiment, the inner diameter of the pipeline 1 is D, the distance between the inlet 3 and the orifice valve 2 is D, and the distance between the first outlet 4 and the orifice valve 2 is D/2. The distance between the second outlet 5 and the orifice valve 2 is D/4. The second outlet 5 is arranged at the D/4 position at the downstream of the orifice valve 2, and the second differential pressure transmitter 7 is arranged between the point and the inlet 3, so that the detection result is more accurate and stable relative to the outlets arranged at other points, and the fluctuation is small.
The orifice plate flowmeter formed by combining the first differential pressure transmitter 6 with the orifice plate valve 2 is the prior art, the second outlet 5 is newly arranged and the second differential pressure transmitter 7 is additionally arranged between the inlet 3 and the second outlet 5 in the embodiment on the prior art, and the online monitoring and the fault early warning of the orifice plate valve 2 performance are realized by monitoring the change of the delta P1/delta P value, so that the safety, the high efficiency and the economic operation of an industrial field are guaranteed, and the manpower, the financial resources and the material resources are saved.
The orifice plate flowmeter formed by combining the first differential pressure transmitter 6 and the orifice plate valve 2 is the prior art, the main principle is that the flow is calculated by utilizing the throttling pressure difference generated in front of and behind the orifice plate of the orifice plate valve 2, and the high-pressure interface and the low-pressure interface of the first differential pressure transmitter 6 are respectively connected to the inlet 3 and the first outlet 4 of the orifice plate valve 2. The inlet-outlet differential pressure Δ P measured by the transmitter (the first differential pressure transmitter in fig. 1) is used, and the fluid flow in the pipeline is calculated by the following formula.
In the formula, C is an outflow coefficient, epsilon is an expansibility coefficient, beta is a ratio of D to D, and delta P is a pressure difference of an inlet and an outlet pressure leading hole.
However, when the orifice valve 2 is applied for a period of time or reinstalled after disassembly and maintenance, the orifice plate part area of the orifice valve 2 may slightly change, and if the change exceeds the standard requirement, or if the influence on the flow measurement is large, a large error may be generated in the calculation of the flow.
Based on the online monitoring device for the performance of the orifice valve 2 in the embodiment 1, the online monitoring method for the performance of the orifice valve 2 in the embodiment comprises the following steps:
1) an inlet 3 is formed in the upstream of a pore plate valve 2 in the pipeline 1, a first outlet 4 and a second outlet 5 are formed in the downstream of the pore plate valve 2, the second outlet 5 is positioned between the first outlet 4 and the pore plate valve 2, a first differential pressure transmitter 6 is arranged between the inlet 3 and the first outlet 4, and a second differential pressure transmitter 7 is arranged between the inlet 3 and the second outlet 5; the first differential pressure transmitter 6 and the second differential pressure transmitter 7 are connected with a control mechanism; the inner diameter of the pipeline 1 is D, the distance between the inlet 3 and the orifice valve 2 is D, the distance between the first outlet 4 and the orifice valve 2 is D/2, and the distance between the second outlet 5 and the orifice valve 2 is D/4. And the opening size of the second outlet 5 is the same as the opening size of the first outlet 4.
2) The differential pressure between the inlet 3 and the first outlet 4 is monitored by a first differential pressure transmitter 6 as Δ P.
3) The differential pressure between the inlet 3 and the second outlet 5 is monitored by the second differential pressure transmitter 7 as Δ P1.
4) The control means calculates the value of Δ P1/. DELTA.p.
5) When the performance of the orifice valve 2 is stable, the value of delta P1/[ delta ] P is a fixed value; when the change degree of the delta P1/delta P value exceeds a set threshold value, the control mechanism gives an early warning. The threshold value for the degree of change is set to 0.2% to 0.5%, and preferably 0.2% in this embodiment, for more accurate detection. That is, in the present embodiment, when the variation degree of Δ P1/. DELTA.p exceeds 0.2% when the orifice valve 2 is stabilized in performance, a warning is given.
As shown in the simulation calculation result of fig. 2, with respect to the diametral distance pressurized orifice plate valve 2 having D of 364mm, the value of Δ P1/Δ P was stabilized at 0.89 at different flow rates, i.e., at different reynolds numbers (Re), and it was found by the simulation calculation that when the value of the value was changed over 0.2%, the possibility that the orifice plate region was acute on the head side and the orifice plate was contaminated was sharply increased. Therefore, the threshold value set for the change degree of the pipeline with the D being 364mm is 0.2%, and the online performance monitoring and early warning of the throttling zone of the radial pressure orifice plate flowmeter can be realized by using the change of the change.
The prior art can only solve the problems of errors and gradual increase of the errors in the using process of the orifice plate flowmeter by replacing the orifice plate flowmeter or regularly verifying the orifice plate flowmeter, and can not carry out continuous performance monitoring and early warning diagnosis on the orifice plate flowmeter. The scheme of the embodiment is that pressure taking holes with the same size are formed in the positions of the cross sections of the original pressure leading holes, namely the D/4 position (the second outlet 5 in the figure 1) behind the orifice plate valve 2, at the downstream of the orifice plate valve, namely the cross section of the D/4 position behind the orifice plate, a second differential pressure transmitter 7 is connected to the newly added pressure taking holes, namely the second outlet 5 and the pressure taking holes (the inlet 3) at the upstream of the orifice plate, and differential pressure delta P1 is measured. When the orifice plate is qualified without any problem, the value of delta P1/delta P is a stable value, and when the value of the value is changed by more than 0.2%, the possibility that the orifice plate is polluted due to the existence of an acute head-on angle in the orifice plate area is increased sharply. The online performance monitoring and early warning of the throttling area of the radial pressure-taking orifice plate flowmeter can be realized by utilizing the change of the value.
Compare other schemes and can only confirm whether there is a problem the orifice plate through the maintenance of disassembling to the in-process that the disassembling was packed back exists the possibility that causes further error, the utility model discloses a scheme has realized that the on-line monitoring and the trouble early warning of footpath apart from getting the regional performance of pressure orifice plate flowmeter orifice plate provide the guarantee for industrial field safety, high-efficient, economic operation, have saved manpower, financial resources and material resources.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022674513.4U CN214372824U (en) | 2020-11-18 | 2020-11-18 | On-line monitoring device for orifice valve performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022674513.4U CN214372824U (en) | 2020-11-18 | 2020-11-18 | On-line monitoring device for orifice valve performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214372824U true CN214372824U (en) | 2021-10-08 |
Family
ID=77977608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022674513.4U Active CN214372824U (en) | 2020-11-18 | 2020-11-18 | On-line monitoring device for orifice valve performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214372824U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525307A (en) * | 2020-11-18 | 2021-03-19 | 苏州热工研究院有限公司 | Online monitoring device and monitoring method for performance of orifice valve |
-
2020
- 2020-11-18 CN CN202022674513.4U patent/CN214372824U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525307A (en) * | 2020-11-18 | 2021-03-19 | 苏州热工研究院有限公司 | Online monitoring device and monitoring method for performance of orifice valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9175810B2 (en) | Custody transfer system and method for gas fuel | |
| KR101550255B1 (en) | Pressure-based flow control device with flow monitor, fluid-supply-system anomaly detection method using same, and method for handling monitor flow anomalies | |
| RU2644451C2 (en) | Method of acoustic determination of fluid flow state change in pipeline, method of acoustic determination of fluid flow state change in measuring station and system for improving flowmeter accuracy by acoustic determination of flow state change | |
| CN104633458B (en) | A kind of thermal power station's water pump real-time online Cavitation detection early warning system and method | |
| CN203811327U (en) | Valve internal leakage online monitoring device | |
| CN113205248B (en) | Regulating valve fault early warning system and method based on big data medium parameter diagnosis | |
| CN207113940U (en) | Throat's pressure Long Nozzle throttling arrangement | |
| CN214372824U (en) | On-line monitoring device for orifice valve performance | |
| CN104633457B (en) | A kind of thermal power station's regulating valve real-time online Cavitation detection early warning system and method | |
| CN205257986U (en) | Oil ration loading skid -mounted integrated device | |
| Chen et al. | A multi-level assessment and correction method for Venturi tube flow measurements | |
| CN112525307A (en) | Online monitoring device and monitoring method for performance of orifice valve | |
| CN200947054Y (en) | Online real flow calibrating apparatus for natural gas flowmeter | |
| CN105181043A (en) | Intelligent monitoring type ultrasonic flow adjusting device and application method thereof | |
| CN114877253A (en) | Operation safety control method for intelligent verification process of natural gas flowmeter | |
| CN209027599U (en) | A kind of redundant flow measuring device | |
| CN208833303U (en) | natural gas metering system | |
| CN115045891B (en) | A monitoring system for a hydraulic system of a gate hydraulic hoist and a method of using the same | |
| Wu et al. | Research and Improvement of the Flowmeter Fracture Problem of Condensate Polishing System in Nuclear Power Plant | |
| CN207515929U (en) | Pneumatic test system of temperature sensor | |
| CN111896237A (en) | A gas turbine fuel nozzle and blade integrated gas flow detection device | |
| Liu | Electronic Information Technology Processing System for Intelligent Metal Tube Float Flow Relying on Mixed Normal Distribution Parameters | |
| CN105136381A (en) | Reverse-blowing detection system | |
| CN219890678U (en) | On-line detection device for leakage in safety valve and regulating valve | |
| CN108593021A (en) | Wing anti-blocking multiple spot air speed pipe elbow meter and negative pressure measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |