CN216386274U - Negative pressure pipeline flow detection device - Google Patents
Negative pressure pipeline flow detection device Download PDFInfo
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- CN216386274U CN216386274U CN202123265887.1U CN202123265887U CN216386274U CN 216386274 U CN216386274 U CN 216386274U CN 202123265887 U CN202123265887 U CN 202123265887U CN 216386274 U CN216386274 U CN 216386274U
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Abstract
The utility model relates to a negative pressure pipeline flow detection device, and belongs to the technical field of hemodialysis treatment equipment. The utility model relates to a negative pressure pipeline flow detection device, which comprises a water flow conveying device, a pressure regulating device, a suction filtration device and a metering device, wherein: the water outlet end of the pipeline to be detected is clamped on the water flow conveying device, the water inlet end of the pipeline to be detected is respectively connected with the water source and the connecting pipe I through two connecting branch pipes, and the water flow conveying device pumps water from the water inlet end to the water outlet end of the pipeline to be detected; the pressure regulating device is connected with the connecting branch pipe of the pipeline to be measured through the connecting pipe I; the suction filtration device is connected with the pressure regulating device through a connecting pipe II; and the metering device is placed below the water outlet end of the pipeline to be measured. The utility model can realize the detection of the performance of the hemodialysis pipeline and the fluid infusion pump pipe, has simple and convenient operation and accurate detection result, and solves the problem of difficult detection.
Description
Technical Field
The utility model relates to a negative pressure pipeline flow detection device, and belongs to the technical field of hemodialysis treatment equipment.
Background
Hemodialysis (HD) is one of the main renal replacement therapies for patients with acute and chronic renal failure, and disposable hemodialysis pipelines and disposable fluid infusion tubes are indispensable consumables in the dialysis and filtration therapy process. More than one of the two tube structures typically comprises a pump tube.
At present, according to the examination and guidance principle of the registration technology of the disposable hemodialysis pipeline, the performance of the disposable fluid infusion tube and the disposable hemodialysis pipeline needs to be checked. However, no special equipment for inspecting the performance of the pipeline exists in the market at present, and in order to realize the inspection of the item under the negative pressure condition, a negative pressure pipeline flow detection device needs to be designed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a negative pressure pipeline flow detection device.
The utility model relates to a negative pressure pipeline flow detection device, which comprises a water flow conveying device, a pressure regulating device, a suction filtration device and a metering device, wherein:
the water outlet end of the pipeline to be detected is clamped on the water flow conveying device, the water inlet end of the pipeline to be detected is respectively connected with the water source and the connecting pipe I through two connecting branch pipes, and the water flow conveying device pumps water from the water inlet end to the water outlet end of the pipeline to be detected;
the pressure regulating device is connected with the connecting branch pipe of the pipeline to be measured through the connecting pipe I;
the suction filtration device is connected with the pressure regulating device through a connecting pipe II;
and the metering device is placed below the water outlet end of the pipeline to be measured.
Preferably, a flow stopping clip is arranged on the connecting pipe I.
Preferably, the pressure regulating device is provided with a pressure regulating valve and a pressure gauge.
Preferably, the pressure gauge is a digital display gauge.
Preferably, the measuring instrument is a measuring cylinder.
The negative pressure pipeline flow detection device has the following beneficial effects:
(1) the performance detection of the hemodialysis pipeline, the fluid infusion pump pipe and other pipelines can be realized;
(2) the operation is simple, and the detection result is accurate;
(2) the connection relation is simple, long-term training on detection personnel is not needed, the labor intensity is reduced, and the economic cost is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of a pipeline to be tested.
Fig. 3 is a schematic structural view of the pressure regulating device.
In the figure: 1. a water flow delivery device; 2. a pressure regulating device; 21. a pressure regulating valve; 22. a pressure gauge; 23. a pipeline connector; 3. a suction filtration device; 4. a metering device; 5. a water source; 6. a pipeline to be tested; 61. a pump tube; 7. a connecting pipe I; 71. a flow stopping clip; 8. connecting branch pipes; 81. connecting a branch pipe I; 82. connecting a branch pipe II; 9. and a connecting pipe II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1 to 3, the negative pressure pipeline flow rate detection device of the present invention includes a water flow delivery device 1, a pressure adjustment device 2, a suction filtration device 3, and a measuring instrument 4, wherein:
the water flow conveying device 1 adopts a peristaltic pump and pumps fluid by alternately extruding and releasing a pipeline clamped on the peristaltic pump by a roller pair in the peristaltic pump; the water outlet end of the pipeline 6 to be measured penetrates through the peristaltic pump, the pump pipe of the pipeline 6 to be measured is clamped on the peristaltic pump, and the size of the peristaltic pump is selected according to the size of the pipeline 6 to be measured; the water inlet end of the pipeline to be detected 6 comprises two connecting branch pipes 8 which are respectively a connecting branch pipe I81 and a connecting branch pipe II 82, the pipeline to be detected 6 is connected with the water source 5 through the connecting branch pipe I81, the pipeline to be detected 6 is connected with the connecting pipe I7 through the connecting branch pipe II 82, water conveyed by the water source 5 passes through the connecting branch pipe I81 and the pipeline to be detected 6, and flows out from the water outlet end of the pipeline to be detected 6 after the pump pipe 61 is extruded and released through the peristaltic pump; because the fluid in the water flow conveying device 1 only contacts the pipeline 6 to be detected and does not contact the pump body of the water flow conveying device 1, the interior of the pipeline 6 to be detected is pollution-free and can be repeatedly used, the repetition precision and the stability precision are high, and the detection precision can be improved.
Pressure regulating device 2, pressure regulating device 2 adopt the device of self-control, including a metal box body, the welding of metal box body top has pressure regulating valve 21 and manometer 22, and box body top, below all are equipped with pipe connection head 23 in addition, and pressure regulating device 2 is used for adjusting whole pipeline and is in the negative pressure state. A pipeline connector 23 above the pressure regulating device 2 is inserted with a connecting pipe I7, then the pressure regulating device 2 is connected with a water source 5 through the connecting pipe I7, and the pressure of the water source 5 entering a pipeline 6 to be measured can be regulated through the pressure regulating device 2; the pressure adjusting device 2 is provided with a pressure adjusting valve 21 and a pressure gauge 22, the pressure adjusting valve 21 can be screwed to adjust the pressure to a pressure value required by detection, the pressure gauge 22 adopts a digital display meter, manual reading is not required by the digital display meter, the pressure adjusting value is accurate, and inaccurate detection result caused by manual reading error is avoided; the connecting pipe I7 is provided with a flow stopping clamp 71, and when the pressure regulating device 2 is not needed to work, the flow stopping clamp 71 is closed, so that the flow of the pipeline under different pressure conditions can be detected conveniently and respectively.
The suction filtration device 3 adopts a vacuum suction filtration pump, is inserted into the pipeline connector below the pressure regulating device 2 through the connecting pipe II 9, and when the suction filtration device 3 performs suction filtration, a negative pressure environment is generated, so that the pipeline 6 to be measured is in a negative pressure state, and the flow detection of the pipeline 6 to be measured in the negative pressure state is performed.
And the metering device 4 is placed below one side of the water outlet end of the pipeline 6 to be measured and is used for receiving and measuring the water flow of the pipeline within a set time. The measuring instrument 4 adopts a measuring cylinder, the measuring cylinder is low in price, easy to obtain, convenient and fast in reading and capable of being repeatedly used, and the economic cost of the whole device is reduced under the condition of ensuring the detection accuracy.
The use process of the utility model is as follows: according to the negative pressure pipeline flow detection device, the water outlet end of the pipeline 6 to be detected penetrates through the water flow conveying device 1, the pump pipe 61 of the pipeline 6 to be detected is clamped on the water flow conveying device 1, the connecting branch I81 of the water inlet end of the pipeline 6 to be detected is connected with the water source 5, the connecting branch II 82 is connected with the connecting pipe I7, the pressure adjusting device 2 is connected with the pipeline 6 to be detected through the connecting pipe I7, and the flow stopping clamp 71 is clamped and closed.
Setting the flow value L of the water flow delivery device 1 according to the inspection requirement0The water source 5 is turned on at 200ml/min, and the flow rate of water through the pipe 6 to be measured is measured for one minute using a measuring cylinder, this data being the flow rate L at normal pressure1.
Then the suction filtration device 3 is opened, the pressure regulating valve 21 on the pressure regulating device 2 is screwed to regulate the pressure to-33.3 kPa (250mmHg) required by the standard and is kept for 10 minutes, the flow stopping clamp 71 on the connecting pipe I7 is opened, and after the pressure is stabilized, the measuring cylinder is used for detecting the flow L of water passing through the pipeline 6 to be detected for one minute under the pressure condition2。
And calculating the relative flow deviation according to the following formula, wherein the flow detection result of the pipeline 6 to be detected is qualified if the relative deviation meets the requirement, and the flow detection result of the pipeline 6 to be detected is unqualified if the relative deviation does not meet the requirement.
The utility model can be widely applied to the occasions of hemodialysis treatment equipment.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a negative pressure pipeline flow detection device, its characterized in that includes rivers conveyor (1), pressure adjusting device (2), suction filter device (3) and measurement instrument (4), wherein:
the device comprises a water flow conveying device (1), wherein the water outlet end of a pipeline (6) to be tested is clamped on the water flow conveying device (1), a connecting branch pipe (8) at the water inlet end of the pipeline (6) to be tested is respectively connected with a water source (5) and a connecting pipe I (7), and the water flow conveying device (1) pumps water from the water inlet end to the water outlet end of the pipeline (6) to be tested;
the pressure adjusting device (2) is connected with a connecting branch pipe (8) of the pipeline to be measured (6) through a connecting pipe I (7);
the suction filtration device (3) is connected with the pressure regulating device (2) through a connecting pipe II (9);
and the metering device (4) is placed below the water outlet end of the pipeline (6) to be measured.
2. The negative pressure pipeline flow detection device as claimed in claim 1, wherein a flow stopping clip (71) is arranged on the connecting pipe I (7).
3. The negative pressure pipeline flow detection device according to claim 1, wherein the pressure regulating device (2) is provided with a pressure regulating valve (21) and a pressure gauge (22).
4. The negative pressure pipeline flow detection device according to claim 3, wherein the pressure gauge (22) is a digital display gauge.
5. The negative pressure pipeline flow detection device according to claim 1, wherein the metering device (4) adopts a measuring cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123265887.1U CN216386274U (en) | 2021-12-23 | 2021-12-23 | Negative pressure pipeline flow detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123265887.1U CN216386274U (en) | 2021-12-23 | 2021-12-23 | Negative pressure pipeline flow detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216386274U true CN216386274U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123265887.1U Active CN216386274U (en) | 2021-12-23 | 2021-12-23 | Negative pressure pipeline flow detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216386274U (en) |
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2021
- 2021-12-23 CN CN202123265887.1U patent/CN216386274U/en active Active
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