CN116448311A - Anti-freezing device and method for pressure-taking guide pipe of steam-water pressure detection instrument - Google Patents
Anti-freezing device and method for pressure-taking guide pipe of steam-water pressure detection instrument Download PDFInfo
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- CN116448311A CN116448311A CN202310242308.6A CN202310242308A CN116448311A CN 116448311 A CN116448311 A CN 116448311A CN 202310242308 A CN202310242308 A CN 202310242308A CN 116448311 A CN116448311 A CN 116448311A
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- Prior art keywords
- pressure
- pipeline
- valve
- water
- taking
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000007710 freezing Methods 0.000 title claims description 8
- 238000000034 method Methods 0.000 title claims description 6
- 238000001514 detection method Methods 0.000 title abstract description 12
- 239000010865 sewage Substances 0.000 claims abstract description 9
- 238000009529 body temperature measurement Methods 0.000 claims description 10
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- 230000008014 freezing Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000002528 anti-freeze Effects 0.000 claims 1
- 238000005452 bending Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
-
- 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
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a pressure-taking conduit antifreezing device of a steam-water pressure detection instrument, which comprises a steam-water pipeline, wherein an opening of the steam-water pipeline is welded with a first pressure-taking pipeline, the first pressure-taking pipeline is connected with a second pressure-taking pipeline through a straight-bending conversion pipeline, a temperature measuring resistor is inserted into the horizontal section of the second pressure-taking pipeline, a signal of the temperature measuring resistor is connected with an electrical control system, the lower part of the second pressure-taking pipeline is connected with an input end of a manual medium valve, an output end of the manual medium valve is connected with an input end of a three-way elbow, a first output end of the three-way elbow is connected with a pressure transmitter, a second output end of the three-way elbow is connected with a sewage valve of the pressure transmitter through a short pipe, an extension conduit is arranged at the bottom of the sewage valve, a first valve is arranged on the extension conduit, the other end of the first valve is connected with an inlet of a booster water pump, an outlet of the booster water pump is connected with an external drain pipe through a second valve, and the external drain pipe is connected with the steam-water pipeline along the vertical direction of the steam-water pipeline.
Description
Technical Field
The invention belongs to the technical field of measurement and control instruments, and particularly relates to an antifreezing device and method for a pressure taking guide pipe of a steam-water pressure detection instrument.
Background
The common steam or water medium pipeline is generally arranged outdoors, the pressure-taking conduit for measuring the pressure is filled with water medium, and the water pressure in the conduit is transmitted to the sensing unit of the transmitter so as to measure the actual pressure of the medium pipeline. The winter temperature in the north is lower than 0 ℃ and even lower than minus 25 ℃, so that water in the pressure detection pressure-taking catheter is easily frozen, and the pressure signal cannot be measured normally. In order to avoid the situation, the pressure-taking guide pipe is usually heated by adopting electric tracing and steam tracing, and the water in the pressure-taking guide pipe is continuously heated to prevent the water from freezing; both of these heat tracing approaches have drawbacks.
1) The electric tracing needs to be provided with an instrument insulation box, and the heat tracing belt is wound around an instrument pressure-taking guide pipe needing heat tracing, so that the heat tracing mode needs more heat tracing belts, the investment cost is high, the electric tracing needs long-term power supply, the power consumption in the whole winter is high, and the energy is not saved; secondly, the insulation box is arranged on the pipeline, so that the firmness is poor and the maintenance is inconvenient; thirdly, the use of electric tracing is easy to cause circuit faults, once the electric tracing is internally short-circuited, the current is increased, a power cable can generate a short-circuit combustion phenomenon, and great potential safety hazards are caused for equipment such as a detection transmitter.
2) The steam tracing needs a steam source, and long-term steam supply is needed, so that the energy is not saved; the temperature of the steam source is higher, so that the transmitter is easily influenced by the high temperature of steam tracing in operation, water in the pressure taking pipe is vaporized, and pressure measurement is inaccurate; therefore, the opening of the steam tracing valve is repeatedly adjusted according to the temperature, and the maintenance workload is high. When steam tracing is adopted, pipelines and valves used for the tracing are eroded by steam, the service life is 2-3 years, the pipelines and the valves are required to be replaced, the maintenance cost is increased, and the operation cost is increased.
In order to reduce adverse effects caused by defects to the greatest extent, a manual field inspection and investigation mode can only be adopted at present, once the fact that the heat tracing effect of the pressure taking pipeline of the instrument is poor is found, a post worker can only urgently open a sewage discharging valve at the lower part of the transmitter to discharge water medium in the pressure taking pipeline, the water medium in the pressure taking pipeline is kept to flow, and water in the pressure taking pipeline is prevented from condensing into ice.
However, the sewage discharge valve is kept to be opened for a long time, water in the pipeline pressure-taking pipe flows to the ground, water resource waste is caused, water flowing to the ground is easy to freeze, the ground is wet and slippery, and unsafe factors are brought to operators.
Therefore, the pressure-taking catheter device for detecting the pressure of the steam or water medium pipeline is simple in structure and convenient to maintain, and the defect problem of the pressure-taking catheter of the conventional detecting instrument is solved.
Disclosure of Invention
The invention aims to provide an antifreezing device and an antifreezing method for a pressure taking guide pipe of a steam-water pressure detecting instrument.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a pressure pipe freeze-proof device is got to catch water pressure gauge, including the catch water pipeline, the opening and the first pressure pipe welding of catch water pipeline, first pressure pipe is got through straight curved transition pipeline and is connected with the second pressure pipe, the horizontal direction cross-section of second pressure pipe is to inserting temperature measurement resistance, the signal access electrical control system of temperature measurement resistance, the lower part of second pressure pipe is connected with the input of manual medium valve, the output of manual medium valve is connected with the input of tee bend elbow, the first output and the pressure transmitter of tee bend elbow are connected, the second output of tee bend elbow is connected with the blowdown valve of pressure transmitter through the nozzle stub, the bottom of blowdown valve is equipped with the extension pipe, install first valve on the extension pipe, the other end and the inlet connection of booster pump of first valve, the export of booster pump is connected with outer drain pipe through the second valve, outer drain pipe is connected with the catch water pipeline along catch water pipeline vertical direction.
Specifically, the height of the first pressure-taking pipeline is higher than the horizontal plane of the steam-water pipeline.
Specifically, the height of pressure transmitter is less than the horizontal plane of catch water pipeline, and the height of pressure transmitter is higher than the blowdown valve, the easy access.
A method for preventing freezing of a pressure-taking guide tube of a steam-water pressure detection instrument comprises the following steps:
the signal of temperature measurement resistance inserts electric control system, and first valve and the second valve of pressure boost pump front and back keep normally open state, and when temperature measurement resistance in the second pressure taking pipeline detected that the temperature is less than the setting, electric control system automatic start increases the water pump, and the pressure boost pump gets electric operation, and the water in first pressure taking pipeline and the second pressure taking pipeline increases flow power, in sending the water in first pressure taking pipeline and the second pressure taking pipeline to the soda pipeline, in the medium in the soda pipeline flows in time in first pressure taking pipeline and the second pressure taking pipeline simultaneously, has guaranteed pressure transmitter's pressure signal's continuity, has realized that the medium dynamic flow in the pressure taking pipeline.
The invention has the following beneficial effects: compared with the traditional pressure taking guide pipe, the invention ensures the continuity of pressure signals of the pressure transmitter, realizes the dynamic flow of medium in the pressure taking pipe, and ensures the effect of no freezing out of the detection instrument guide pipe in winter; meanwhile, the medium in the pressure taking pipe circularly flows, so that the waste caused by water flowing in the pressure taking pipe of the pipe to the ground is avoided, and the recycling of water resources is realized.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention.
In the figure: 1-a steam-water pipeline; 2-a first pressure-taking pipeline; 3-a second pressure-taking pipeline; 4-manual media valve; 5-a three-way elbow; 6-a pressure transmitter; 7-a sewage disposal valve; 8-a first valve; 9-a booster water pump; 10-a second valve; 11-an outer drain pipe; 12-a temperature measuring resistor; 13-electrical control system.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings.
As shown in figure 1, a pressure-taking conduit anti-freezing device of a steam-water pressure detection instrument is characterized in that a medium in a steam-water pipeline 1 flows along the horizontal direction, a first pressure-taking pipeline 2 of the detection instrument is directly connected with an opening of the steam-water pipeline 1, the first pressure-taking pipeline 2 is vertically welded with the steam-water pipeline 1, the first pressure-taking pipeline 2 is higher than the horizontal plane of the steam-water pipeline 1, a second pressure-taking pipeline 3 is connected with a pipeline of the first pressure-taking pipeline 2 through straight-bending conversion, the second pressure-taking pipeline 3 is installed with an input end of a manual medium valve 4, an output end of the manual medium valve 4 is connected with an input end of a three-way elbow 5, a first output end of the three-way elbow 5 is connected with a sewage valve 7 of the pressure transmitter 6 through a short pipe, the sewage valve 7 is convenient to overhaul, and the pressure transmitter 6 is lower than the horizontal plane of the steam-water pipeline 1, and the sewage valve 7 is lower than the horizontal plane of the pressure transmitter 6.
The output end of the blow-down valve 7 is connected with the inlet of the booster water pump 9, the outlet of the booster water pump 9 is provided with a second valve 10, the output end of the second valve 10 is vertically connected with the steam-water pipeline 1 through an outer drain pipe 11, the lower part of the steam-water pipeline 1 is vertically perforated on the horizontal plane, and the steam-water pipeline 1 is welded with the outer drain pipe 11.
And a hole is formed in the horizontal direction on a pipeline between the second pressure taking pipeline 3 and the manual medium valve 4, a temperature measuring resistor 12 is arranged, and the temperature measuring resistor 12 senses the temperature change of the medium in the second pressure taking pipeline 3 and transmits a signal to an electric control system 13.
In order to realize that the water medium in the pipelines of the first pressure-taking pipeline 2 and the second pressure-taking pipeline 3 is not frozen, the water in the 2 pressure-taking pipelines is required to flow continuously, so that the freezing and the icing of the water in winter are prevented.
The section of the pipeline of the second pressure taking pipeline 3 in the horizontal direction is inserted with a temperature measuring resistor 12, an extension conduit is added below the transmitter blow-down valve 7, a first valve 8 is added on the extension conduit, the other end of the first valve 8 is connected with the inlet of the booster water pump 9, the outlet of the booster water pump 9 is connected with an outer drain pipe 11 through a second valve 10, and the outer drain pipe 11 is connected with the steam water pipeline along the vertical direction of the steam water pipeline.
The signal of temperature measurement resistance is connected into electrical control system 12, and first valve 8 and second valve 10 before and behind booster pump 9 keep "normally open" state, and when temperature measurement resistance 12 in the second pressure-taking pipeline 3 detects that the temperature is less than the setting value, electrical control system 13 automatic start increases pump 9, and booster pump 9 gets the electricity operation, increases the flow power for the water in the first pressure-taking pipeline 2 and the second pressure-taking pipeline 3, sends the water in the first pressure-taking pipeline 2 and the second pressure-taking pipeline 3 into soda pipeline 1, and the medium in soda pipeline 1 flows in time in first pressure-taking pipeline 2 and the second pressure-taking pipeline 3 simultaneously, has guaranteed the continuity of the pressure signal of pressure transmitter 6. After the novel catheter device of the detection instrument is put into operation, the dynamic flow of the medium in the pressure taking pipeline is realized, and the effect of preventing the catheter of the detection instrument from being frozen in winter is ensured; meanwhile, the medium in the pressure taking pipeline circularly flows, so that the waste caused by flowing of water in the steam-water pipeline 1, the first pressure taking pipeline 2 and the second pressure taking pipeline 3 to the ground is avoided, and the recycling of water resources is realized.
The present invention is not limited to the above embodiments, and any person who can learn the structural changes made under the teaching of the present invention can fall within the scope of the present invention if the present invention has the same or similar technical solutions.
The technology, shape, and construction parts of the present invention, which are not described in detail, are known in the art.
Claims (4)
1. The utility model provides a pressure pipe freeze-proof device is got to catch water pressure gauge, a serial communication port, including the catch water pipeline, the opening and the first pressure pipe welding of catch water pipeline, first pressure pipe is connected with the second pressure pipe through straight bend transition pipeline, the horizontal direction cross-section of second pressure pipe inserts temperature measurement resistance, the signal access electric control system of temperature measurement resistance, the lower part of second pressure pipe is connected with manual medium valve's input, manual medium valve's output is connected with three way elbow's input, three way elbow's first output is connected with pressure transmitter, three way elbow's second output is connected with pressure transmitter's blowdown valve through the nozzle stub, the bottom of blowdown valve is equipped with the extension pipe, install first valve on the extension pipe, the other end and the inlet connection of booster pump of first valve, booster pump's export is connected with outer drain pipe through the second valve, outer drain pipe is connected with the catch water pipeline along catch water pipeline vertical direction.
2. The vapor pressure gauge pressure conduit antifreeze apparatus of claim 1, wherein said first pressure conduit has a height above the horizontal plane of the vapor conduit.
3. The pressure taking guide pipe antifreezing device for the steam-water pressure detecting instrument according to claim 1, wherein the pressure transmitter is lower than the horizontal plane of the steam-water pipeline, and is higher than the sewage discharging valve, so that the pressure transmitter is convenient to overhaul.
4. A method for preventing freezing of a pressure-taking pipe of a steam-water pressure detecting instrument according to any one of claims 1 to 3, comprising the steps of:
the signal of temperature measurement resistance inserts electric control system, and first valve and the second valve of pressure boost pump front and back keep normally open state, and when temperature measurement resistance in the second pressure taking pipeline detected that the temperature is less than the setting, electric control system automatic start increases the water pump, and the pressure boost pump gets electric operation, and the water in first pressure taking pipeline and the second pressure taking pipeline increases flow power, in sending the water in first pressure taking pipeline and the second pressure taking pipeline to the soda pipeline, in the medium in the soda pipeline flows in time in first pressure taking pipeline and the second pressure taking pipeline simultaneously, has guaranteed pressure transmitter's pressure signal's continuity, has realized that the medium dynamic flow in the pressure taking pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310242308.6A CN116448311A (en) | 2023-03-14 | 2023-03-14 | Anti-freezing device and method for pressure-taking guide pipe of steam-water pressure detection instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310242308.6A CN116448311A (en) | 2023-03-14 | 2023-03-14 | Anti-freezing device and method for pressure-taking guide pipe of steam-water pressure detection instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116448311A true CN116448311A (en) | 2023-07-18 |
Family
ID=87126318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310242308.6A Pending CN116448311A (en) | 2023-03-14 | 2023-03-14 | Anti-freezing device and method for pressure-taking guide pipe of steam-water pressure detection instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116448311A (en) |
-
2023
- 2023-03-14 CN CN202310242308.6A patent/CN116448311A/en active Pending
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