CN112665926A - Ultrapure water constant-temperature sampling header pipe - Google Patents
Ultrapure water constant-temperature sampling header pipe Download PDFInfo
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- CN112665926A CN112665926A CN202011532406.6A CN202011532406A CN112665926A CN 112665926 A CN112665926 A CN 112665926A CN 202011532406 A CN202011532406 A CN 202011532406A CN 112665926 A CN112665926 A CN 112665926A
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses an ultrapure water constant-temperature sampling header pipe, which belongs to the technical field of air monitoring and comprises a sampling pipe, wherein an exhaust fan is installed at the air outlet end of the sampling pipe, the sampling pipe sequentially comprises an inner pipe, an intermediate sleeve pipe and an outer sleeve pipe from inside to outside, a temperature control circulating pipe spirally wound on the outer wall of the inner pipe is sleeved on the inner pipe, a water inlet end and a water outlet end of the temperature control circulating pipe are connected with a constant-temperature ultrapure water tank through pipelines, and a heat insulation layer is also filled between the intermediate sleeve pipe and the outer sleeve pipe. Through the control by temperature change circulating pipe that has helical structure at the outer wall cover of inner tube, make control by temperature change circulating pipe fully contact with the inner tube pipe wall, this control by temperature change circulating pipe inserts super pure water case of constant temperature, the ultrapure water that utilizes super pure water case control of constant temperature changes the temperature of inner tube, makes the temperature of inner tube keep invariable, and sampling pipe adopts three layer construction moreover, still packs between middle sleeve pipe and the outer tube and has the heat preservation, makes the temperature of inner tube and control by temperature change circulating pipe be difficult for receiving external influence, and the constant temperature effect is better.
Description
Technical Field
The invention relates to the technical field of air monitoring, in particular to an ultrapure water constant-temperature sampling main pipe.
Background
Air monitoring refers to the fixed-point, continuous, or timed sampling and measurement of pollutants present in the air. In order to monitor air, a plurality of air monitoring points are generally set up in a city, automatic monitoring instruments are installed for continuous automatic monitoring, monitoring results are sent to a person to be retrieved periodically, and relevant data are analyzed and obtained. Items for air monitoring mainly include sulfur dioxide, nitric oxide, hydrocarbons, floating dust, and the like. Air monitoring is the basis for air quality control and reasonable evaluation of air quality.
In gas monitoring, ambient air is generally required to be collected by a main pipe, the ambient air sampling main pipe is mainly used in a system for continuously sampling the quality of air at the middle stage of the 80 s when the ambient air sampling main pipe is used domestically, certain measured parameters, especially sulfur dioxide (SO2), in the air are very easily adsorbed by the sampling main pipe, especially when the air humidity is high or a large temperature difference exists between the outdoor and the indoor, the air can be condensed on the wall surface of the sampling main pipe, SO that the monitoring result is obviously low, and the temperature of the sampling main pipe needs to be controlled, but the heat is transferred to the sampling main pipe through a circulating heating medium in the traditional heating mode of the air adopting the main pipe, but the temperature change is easily caused after the general medium leaves heating equipment, SO that the temperature of the air adopting the main pipe cannot be guaranteed to be constant, and for some gases generated by combustion, the gas temperature that needs to guarantee to gather is unanimous with the temperature when discharging, but traditional sampling house steward inlet end is far away from the heating end distance, leads to the temperature to run off greatly, and when the gas flow velocity was too fast, the heating end did not come the heating, gives vent to anger again and causes measuring error very easily when the end detects, influences monitoring accuracy.
Disclosure of Invention
The invention aims to solve the problems that the temperature of the collected gas cannot be kept constant by adopting the main pipe for air and the measurement result is influenced by large gas temperature loss, and provides the ultrapure water constant-temperature sampling main pipe which has the advantages that the gas is heated by ultrapure water, the temperature is more constant, the gas sampling nozzle extends into the sampling pipe, the gas temperature loss is small, and the measurement result is more accurate.
The invention achieves the purpose through the following technical scheme, and the ultrapure water constant-temperature sampling main pipe comprises a sampling pipe, wherein an exhaust fan is installed at the air outlet end of the sampling pipe, the sampling pipe sequentially comprises an inner pipe, an intermediate sleeve pipe and an outer sleeve pipe from inside to outside, a temperature control circulating pipe spirally wound on the outer wall of the inner pipe is sleeved on the inner pipe, a water inlet end and a water outlet end of the temperature control circulating pipe are connected with a constant-temperature ultrapure water tank through pipelines, and a heat insulation layer is also filled between the intermediate sleeve pipe and the outer sleeve pipe.
Preferably, the outer wall of the sampling pipe is provided with pipe joints respectively communicated with the water inlet end and the water outlet end of the temperature control circulating pipe, one of the pipe joints is connected with the water outlet end of the constant-temperature ultrapure water tank through a water inlet pipe, and the other pipe joint is connected with the water inlet end of the constant-temperature ultrapure water tank through a water outlet pipe.
Preferably, a pipeline is connected between the sampling pipe and the exhaust fan to form an air outlet pipe, and a plurality of branch pipelines are arranged on the air outlet pipe.
Preferably, the air inlet end of the sampling pipe is provided with a gas sampling nozzle which is of a horn-shaped structure.
Preferably, the air intake nozzle is composed of an air intake cover, and the surface of the air intake cover is provided with a plurality of filtering holes.
Preferably, the inlet end of the air inlet cover is provided with a cover opening mounting plate, the opening of the sampling pipe is provided with a mounting joint, and the outlet end of the air inlet cover extends into the sampling pipe and is fixed on the mounting joint through the cover opening mounting plate.
Preferably, the end of giving vent to anger of cover sets up the cover tail mounting panel, and the orificial erection joint that sets up of sampling pipe, cover tail mounting panel are fixed on the erection joint.
Compared with the prior art, the invention has the beneficial effects that:
1. through the control by temperature change circulating pipe that has helical structure at the outer wall cover of inner tube, make control by temperature change circulating pipe fully contact with the inner tube pipe wall, this control by temperature change circulating pipe inserts super pure water case of constant temperature, the ultrapure water that utilizes super pure water case control of constant temperature changes the temperature of inner tube, makes the temperature of inner tube keep invariable, and sampling pipe adopts three layer construction moreover, still packs between middle sleeve pipe and the outer tube and has the heat preservation, makes the temperature of inner tube and control by temperature change circulating pipe be difficult for receiving external influence, and the constant temperature effect is better.
2. Through the air intake end installation air valve at the sampling pipe, the air valve has two kinds of states, can fix in the inside of sampling pipe, and gas directly gets into the inner tube this moment and carries out thermostatic control, reduces the loss of temperature, and another kind of state is outside for fixing the mouth of pipe of sampling pipe, and the scope of admitting air is big, makes the air valve can use rationally according to the site conditions.
Drawings
Fig. 1 is a schematic structural diagram of the overall device of the present invention.
FIG. 2 is a schematic view of the internal structure of the sampling tube of the present invention.
Fig. 3 is a schematic view of a gas production nozzle mounting structure in embodiment 1 of the present invention.
Fig. 4 is a schematic view of a gas production nozzle mounting structure in embodiment 2 of the present invention.
In the figure: 1. sampling pipe, 2, outlet duct, 3, branch pipeline, 4, exhaust fan, 5, constant temperature super pure water box, 6, outlet pipe, 7, inlet tube, 8, outer sleeve, 9, middle sleeve, 10, inner tube, 11, temperature control circulating pipe, 12, heat preservation, 13, pipe joint, 14, gas sampling nozzle, 15, air inlet cover, 16, cover mouth mounting panel, 17, cover tail mounting panel, 18, filtration pore, 19, erection joint.
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.
Referring to fig. 1 and 2, a main pipe for sampling ultrapure water at constant temperature comprises a sampling pipe 1, an exhaust fan 4 is installed at an air outlet end of the sampling pipe 1, the sampling pipe 1 sequentially comprises an inner pipe 10, an intermediate sleeve 9 and an outer sleeve 8 from inside to outside, a temperature control circulating pipe 11 spirally wound on the outer wall of the inner pipe 10 is sleeved on the inner pipe 10, a water inlet end and a water outlet end of the temperature control circulating pipe 11 are connected with a constant temperature ultrapure water tank 5, an insulating layer 12 is filled between the intermediate sleeve 9 and the outer sleeve 8, the exhaust fan 4 is used for pumping air into the sampling pipe 1, so that the sampling pipe 1 can collect air, the sampling pipe 1 adopts a three-layer structure, the inner pipe 10 of the inner layer is used for passing air, the temperature control circulating pipe 11 wound on the outer wall of the inner pipe 10 is used for controlling the temperature of the gas inside the inner pipe 10 by changing the temperature of ultrapure, therefore, when ultrapure water is heated, the ultrapure water can maintain a longer time of heat, so the temperature of the inner tube 10 is controlled more accurately by the ultrapure water, the ultrapure water is continuously circulated in the temperature control circulating tube 11 through the constant temperature ultrapure water tank 5, and the heat-insulating layer is filled between the outer layer and the middle layer of the sampling tube 1, so that the temperature control circulating tube 11 is not influenced by the external environment.
The outer wall of the sampling pipe 1 is provided with a pipeline joint 13 which is respectively communicated with the water inlet end and the water outlet end of the temperature control circulating pipe 11, one of the pipeline joints 13 is connected with the water outlet end of the constant temperature ultrapure water tank 5 through a water inlet pipe 7, the other pipeline joint 13 is connected with the water inlet end of the constant temperature ultrapure water tank 5 through a water outlet pipe 6, a constant temperature heating device and a circulating pump are arranged in the constant temperature ultrapure water tank 5, ultrapure water is heated by constant-temperature heating equipment, the ultrapure water is pumped into the water outlet pipe 6 by the circulating pump, the heated ultrapure water enters the temperature control circulating pipe 11 along the water outlet pipe 6, flows through a circle and then flows back into the heating equipment from the water inlet pipe 7 for heating, thereby realizing the effect of continuous constant temperature, an air outlet pipe 2 is connected between the sampling pipe 1 and the exhaust fan 4 through a pipeline, a plurality of branch pipelines 3 are arranged on the air outlet pipe 2, through a plurality of branch pipelines 3 on the outlet duct 2, make a sampling pipe 1 satisfy a plurality of gas detection equipment and use.
Example 1
As shown in fig. 3, the air intake end of the sampling tube 1 is provided with a gas intake nozzle 14, the gas intake nozzle 14 is in a horn structure, the gas intake effect of the gas intake nozzle 14 in the horn structure is better, the gas intake nozzle 14 is composed of an air intake cover 15, the surface of the air intake cover 15 is provided with a plurality of filtering holes 18, the large impurity can be prevented from entering the sampling tube 1 through the filtering hole 18, the air inlet end of the air inlet cover 15 is provided with a cover opening mounting plate 16, the pipe orifice of the sampling tube 1 is provided with a mounting joint 19, the air outlet end of the air inlet cover 15 extends into the sampling tube 1 and is fixed on the mounting joint 19 through the cover opening mounting plate 16, the air outlet end of the air inlet cover 15 directly extends into the inner tube 10 of the sampling tube 1, therefore, the gas can directly enter the heating section of the temperature control circulating pipe 11 after being pumped into the gas inlet hood 15, the gas temperature loss caused by the overlong time of the process from the gas entering the gas sampling nozzle 14 to the heating section is prevented, and the gas sampling nozzle 14 can meet the requirements of collecting and detecting some combustion exhaust gas.
Example 2
As shown in fig. 4, sampling mouth 14 is adopted in the inlet end installation of sampling pipe 1, sampling mouth 14 is horn type structure, the sampling mouth 14 of horn type structure is admitted air the effect better, sampling mouth 14 comprises air intake cover 15, a plurality of filtration holes 18 are seted up on air intake cover 15's surface, can completely cut off bold impurity and get into sampling pipe 1 through filtering hole 18, the end of giving vent to anger of air intake cover 15 sets up cover tail mounting panel 17, the orificial erection joint 19 that sets up of sampling pipe 1, cover tail mounting panel 17 is fixed on erection joint 19, the great part of bore of air intake cover 15 is located sampling pipe 1's outside, can gather not equidirectional gas like this, utilize this sampling mouth 14 can realize the sampling of diffusion gas.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. The utility model provides an ultrapure water constant temperature sampling house steward, includes sampling pipe (1), sampling pipe (1) give vent to anger end installation air exhauster (4), its characterized in that, sampling pipe (1) includes inner tube (10), intermediate casing (9) and outer tube (8) from inside to outside in proper order, the cover has the spiral winding on inner tube (10) the control by temperature change circulating pipe (11) of inner tube (10) outer wall, the end of intaking and the play water end pipe connection constant temperature superpure water case (5) of control by temperature change circulating pipe (11), intermediate casing (9) with it has heat preservation (12) still to fill between outer tube (8).
2. The ultrapure water constant-temperature sampling header pipe according to claim 1, wherein the outer wall of the sampling pipe (1) is provided with pipe joints (13) respectively communicated with the water inlet end and the water outlet end of the temperature control circulating pipe (11), one of the pipe joints (13) is connected with the water outlet end of the constant-temperature ultrapure water tank (5) through the water inlet pipe (7), and the other pipe joint (13) is connected with the water inlet end of the constant-temperature ultrapure water tank (5) through the water outlet pipe (6).
3. The ultrapure water constant-temperature sampling main pipe according to claim 1, wherein an outlet pipe (2) is further connected between the sampling pipe (1) and the exhaust fan (4) through a pipeline, and a plurality of branch pipes (3) are arranged on the outlet pipe (2).
4. The ultrapure water constant-temperature sampling header pipe as recited in claim 1, wherein the gas inlet end of the sampling pipe (1) is provided with a gas nozzle (14), and the gas nozzle (14) is of a horn-shaped structure.
5. The ultrapure water constant-temperature sampling header pipe according to claim 4, wherein the gas sampling nozzle (14) is composed of a gas inlet cover (15), and a plurality of filtering holes (18) are formed in the surface of the gas inlet cover (15).
6. The ultrapure water constant-temperature sampling header pipe according to claim 5, wherein the gas inlet end of the gas inlet hood (15) is provided with a hood opening mounting plate (16), the nozzle of the sampling pipe (1) is provided with a mounting joint (19), and the gas outlet end of the gas inlet hood (15) extends into the sampling pipe (1) and is fixed on the mounting joint (19) through the hood opening mounting plate (16).
7. The ultrapure water constant-temperature sampling header pipe according to claim 5, wherein the gas outlet end of the gas inlet hood (15) is provided with a hood tail mounting plate (17), the nozzle of the sampling pipe (1) is provided with a mounting joint (19), and the hood tail mounting plate (17) is fixed on the mounting joint (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011532406.6A CN112665926B (en) | 2020-12-22 | 2020-12-22 | Ultrapure water constant-temperature sampling header pipe |
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| CN202011532406.6A CN112665926B (en) | 2020-12-22 | 2020-12-22 | Ultrapure water constant-temperature sampling header pipe |
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| CN112665926A true CN112665926A (en) | 2021-04-16 |
| CN112665926B CN112665926B (en) | 2022-08-23 |
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