CN220819093U - Differential pressure flowmeter with reducing runner - Google Patents
Differential pressure flowmeter with reducing runner Download PDFInfo
- Publication number
- CN220819093U CN220819093U CN202321749501.0U CN202321749501U CN220819093U CN 220819093 U CN220819093 U CN 220819093U CN 202321749501 U CN202321749501 U CN 202321749501U CN 220819093 U CN220819093 U CN 220819093U
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- CN
- China
- Prior art keywords
- heat
- differential pressure
- heat preservation
- pipe
- steam
- 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.)
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- 238000004321 preservation Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005338 heat storage Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 8
- 239000012188 paraffin wax Substances 0.000 claims description 8
- 239000011232 storage material Substances 0.000 claims description 7
- 239000008213 purified water Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 abstract description 4
- 238000009834 vaporization Methods 0.000 abstract description 4
- 230000008016 vaporization Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The utility model discloses a differential pressure type flowmeter with a variable-diameter flow channel, which relates to the technical field of flowmeters, wherein a heat preservation device is arranged on a pressure guide pipe of a flowmeter body and comprises a heat preservation body, a heat exchange cavity, a steam generation mechanism and a vacuumizing mechanism, the heat exchange cavity is arranged in the inner wall of the heat preservation body, the steam generation mechanism is arranged below the heat preservation body and is communicated with the inside of the heat exchange cavity through a communicating pipe, and the communicating pipe is also provided with the vacuumizing mechanism communicated with the steam generation mechanism. According to the utility model, the vacuumizing mechanism is utilized to suck out the gas in the heat exchange cavity, so that the pressure in the heat exchange cavity is reduced, the boiling point of water in the steam generating mechanism is reduced, the steam generating mechanism can quickly generate steam with lower temperature at lower heating temperature, and after the steam enters the heat exchange cavity, heat can be transferred to the impulse pipe, and on the premise of realizing heat preservation of the impulse pipe, the steam with lower temperature can avoid vaporization phenomenon of condensate in the impulse pipe.
Description
Technical Field
The utility model belongs to the technical field of flowmeters, and particularly relates to a differential pressure type flowmeter with a variable-diameter runner.
Background
In patent publication (bulletin) No.: in the patent CN208333566U, a differential pressure flowmeter with a variable-diameter flow channel is disclosed, and in the practical use environment in northern winter, because the environmental temperature in northern winter is lower, a heat-insulating device with a heater needs to be arranged around the pressure guide pipe on the differential pressure flowmeter, so that the heat generated by the heater is utilized to keep a proper temperature around the pressure guide pipe. However, when the heater of the existing heat preservation device is used, in order to increase the temperature rising speed, a heater with larger power is used, so that excessive heat generated by the heater during starting is caused, condensate in the pressure guide pipe may be vaporized, and the pressure guide pipe is inconsistent in transmission pressure, so that an additional error of measurement is generated. However, the use of a low-power heater results in a low temperature rise rate and poor heat preservation effect.
Disclosure of utility model
The utility model aims to provide a differential pressure type flowmeter with a reducing flow passage, which solves the problem that the condensate in a pressure guide pipe is possibly vaporized due to high heat generated by a heater of a heat preservation device of the traditional differential pressure type flowmeter with the reducing flow passage.
In order to solve the technical problems, the utility model is realized by the following technical scheme:
The utility model relates to a differential pressure type flowmeter with a reducing flow passage, which comprises a flowmeter body, wherein a heat preservation device is arranged on a pressure guide pipe of the flowmeter body, the heat preservation device comprises a heat preservation body, a heat exchange cavity, a communicating pipe, a steam generating mechanism and a vacuumizing mechanism, the heat exchange cavity is arranged in the inner wall of the heat preservation body, the steam generating mechanism is arranged below the heat preservation body and is communicated with the inside of the heat exchange cavity through the communicating pipe, and the communicating pipe is also provided with the vacuumizing mechanism communicated with the heat exchange cavity.
Further, the steam generating mechanism comprises a storage tank, a bottom cover and a heating device, wherein the top end of the storage tank is connected with the communicating pipe, the bottom cover is detachably arranged at the bottom end of the storage tank, liquid is stored in the storage tank, and the heating device is arranged on the bottom cover.
Further, the liquid is purified water.
Further, the heating device is a PTC heater.
Further, the vacuumizing mechanism comprises a guide pipe and a one-way valve, one end of the guide pipe is connected with the communicating pipe, the other end of the guide pipe is connected with an air extracting pump, and the guide pipe is provided with the one-way valve.
Further, a heat storage cavity is further formed in the inner wall of the heat insulation body outside the heat exchange cavity, and phase change heat storage materials are stored in the heat storage cavity.
Further, the phase-change heat storage material is paraffin, and a heat conduction metal net is fixed in the heat storage cavity.
The utility model has the following beneficial effects:
Through utilizing evacuation mechanism with the interior gaseous extraction part of heat transfer chamber for heat transfer intracavity pressure reduces, and then reduces the boiling point of water in the steam generation mechanism, makes steam generation mechanism can just can produce the vapor of lower temperature fast under lower heating temperature, and after vapor entered into the heat transfer chamber, can give the impulse pipe with heat transfer, under the heat preservation prerequisite to the impulse pipe, lower temperature vapor can avoid the impulse pipe in the condensate to have the vaporization phenomenon.
Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for 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 utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a differential pressure flow meter with a variable diameter flow path;
FIG. 2 is a schematic diagram of a differential pressure flow meter with a variable diameter flow path;
FIG. 3 is a schematic top view of a differential pressure flow meter with a variable diameter flow path;
FIG. 4 is a schematic diagram of the internal structure of a differential pressure flow meter with a variable diameter flow path;
in the drawings, the list of components represented by the various numbers is as follows:
1. A pressure guiding pipe; 2. a heat insulator; 3. a heat exchange cavity; 4. a communicating pipe; 5. a storage tank; 6. a bottom cover; 7. a liquid; 8. a conduit; 9. a one-way valve; 10. an air extracting pump; 11. a heat storage chamber; 12. a phase change heat storage material; 13. a heat conducting metal net.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the utility model discloses a differential pressure type flowmeter with a variable-diameter flow channel, which comprises a flowmeter body, wherein a heat preservation device is arranged on a pressure guide pipe 1 of the flowmeter body, the heat preservation device comprises a heat preservation body 2, a heat exchange cavity 3, a communicating pipe 4, a steam generation mechanism and a vacuumizing mechanism, the heat exchange cavity 3 is arranged in the inner wall of the heat preservation body 2, the steam generation mechanism is arranged below the heat preservation body 2 and is communicated with the inside of the heat exchange cavity 3 through the communicating pipe 4, and the communicating pipe 4 is also provided with the vacuumizing mechanism communicated with the heat exchange cavity.
The steam generating mechanism comprises a storage tank 5, a bottom cover 6 and a heating device, wherein the top end of the storage tank 5 is connected with a communicating pipe 4, the bottom cover 6 is detachably arranged at the bottom end of the storage tank 5, liquid 7 is stored in the storage tank 5, and the heating device is arranged on the bottom cover 6. The liquid 7 is purified water.
The heating device is a PTC heater. The PTC heater is an automatic temperature control and electricity saving heater. The heater is formed by using PTC element as heating source, aluminum sheet as radiator, and sticking and welding. The PTC heater has the remarkable characteristics of light appearance, rapid temperature rise, safety, no open fire, self-control of temperature when the ventilator fails and long service life. The PTC heater heating rate is fast, can start fast and heat the liquid 7 in the storage tank 5 to realize quick heating, avoid because the heating time overlength leads to the untimely condition of heat preservation effect to take place.
The vacuumizing mechanism comprises a guide pipe 8 and a one-way valve 9, one end of the guide pipe 8 is connected with the communicating pipe 4, the other end of the guide pipe 8 is connected with an air pump 10, and the guide pipe 8 is provided with the one-way valve 9. The vacuum pumping mechanism is arranged, because the evaporation temperature of the purified water is about 100 ℃ at normal temperature, the generated steam is high in temperature, and therefore the air suction pump 10 of the vacuum pumping mechanism is used for pumping out the air in the pipe body and the heat exchange cavity 3, so that the air pressure in the heat exchange cavity 3 and the tank body is reduced, the boiling point of the purified water in the tank body is reduced under smaller pressure, the heating device can heat the purified water to a temperature less than 100 ℃, steam with lower temperature can be generated, heat exchange can be better carried out between the steam and the pressure guide pipe 1, and the problem that the steam with higher temperature generates vaporization phenomenon is avoided.
When the utility model is used, the vacuumizing mechanism is utilized to suck out the gas in the heat exchange cavity 3, so that the pressure in the heat exchange cavity 3 is reduced, the boiling point of water in the steam generating mechanism is reduced, the steam generating mechanism can quickly generate steam with lower temperature at lower heating temperature, after the steam enters the heat exchange cavity 3, the steam can transfer heat to the impulse pipe 1, and on the premise of realizing heat preservation of the impulse pipe 1, the steam with lower temperature can avoid vaporization phenomenon of condensate in the impulse pipe 1.
One specific application of this embodiment is: a heat storage cavity 11 is also arranged on the inner wall of the heat insulation body 2 outside the heat exchange cavity 3, and a phase change heat storage material 12 is stored in the heat storage cavity 11.
The phase-change heat storage material 12 is paraffin, and a heat conduction metal net 13 is fixed in the heat storage cavity 11. The heat storage cavity 11 and paraffin in the heat storage cavity are arranged, and the heating device is in a working state for a long time because the heat of steam generated by heating water by a heater is simply used for preserving heat; after the heat storage cavity 11 and the paraffin are arranged, part of heat of steam is absorbed by the paraffin and stored, when the heater stops working, the paraffin can continuously release the heat to realize heat preservation, and the arranged heat conducting metal net 13 can quickly and uniformly transfer the heat to the paraffin.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.
Claims (7)
1. A differential pressure flow meter having a variable diameter flow passage, characterized by: including the flowmeter body, be provided with heat preservation device on the impulse pipe (1) of flowmeter body, heat preservation device includes heat preservation body (2), heat transfer chamber (3), communicating pipe (4), steam generation mechanism, evacuating mechanism, heat transfer chamber (3) have been seted up in heat preservation body (2) inner wall, heat preservation body (2) below is provided with steam generation mechanism, steam generation mechanism passes through communicating pipe (4) and the inside intercommunication of heat transfer chamber (3), still be provided with evacuating mechanism with it intercommunication on communicating pipe (4).
2. The differential pressure type flowmeter with the variable-diameter flow channel according to claim 1, wherein the steam generating mechanism comprises a storage tank (5), a bottom cover (6) and a heating device, the top end of the storage tank (5) is connected with the communicating pipe (4), the bottom cover (6) is detachably arranged at the bottom end of the storage tank (5), liquid (7) is stored in the storage tank (5), and the heating device is arranged on the bottom cover (6).
3. A differential pressure flow meter with a variable diameter flow passage according to claim 2, characterized in that the liquid (7) is purified water.
4. A differential pressure flow meter with a variable diameter flow path as claimed in claim 2 wherein said heating means is a PTC heater.
5. The differential pressure type flowmeter with the variable-diameter runner according to claim 1, wherein the vacuumizing mechanism comprises a guide pipe (8) and a one-way valve (9), one end of the guide pipe (8) is connected with the communicating pipe (4), the other end of the guide pipe (8) is connected with an air pump (10), and the one-way valve (9) is arranged on the guide pipe (8).
6. The differential pressure type flowmeter with the variable-diameter runner according to claim 1, wherein a heat storage cavity (11) is further formed in the inner wall of the heat insulation body (2) outside the heat exchange cavity (3), and a phase change heat storage material (12) is stored in the heat storage cavity (11).
7. The differential pressure type flowmeter with the variable-diameter runner according to claim 6, characterized in that the phase-change heat storage material (12) is paraffin, and a heat conducting metal net (13) is fixed in the heat storage cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321749501.0U CN220819093U (en) | 2023-07-05 | 2023-07-05 | Differential pressure flowmeter with reducing runner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321749501.0U CN220819093U (en) | 2023-07-05 | 2023-07-05 | Differential pressure flowmeter with reducing runner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220819093U true CN220819093U (en) | 2024-04-19 |
Family
ID=90679474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321749501.0U Active CN220819093U (en) | 2023-07-05 | 2023-07-05 | Differential pressure flowmeter with reducing runner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220819093U (en) |
-
2023
- 2023-07-05 CN CN202321749501.0U patent/CN220819093U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |