CN213559073U - Crystallization-proof device for micro-positive pressure liquid level probe - Google Patents
Crystallization-proof device for micro-positive pressure liquid level probe Download PDFInfo
- Publication number
- CN213559073U CN213559073U CN202022344015.3U CN202022344015U CN213559073U CN 213559073 U CN213559073 U CN 213559073U CN 202022344015 U CN202022344015 U CN 202022344015U CN 213559073 U CN213559073 U CN 213559073U
- Authority
- CN
- China
- Prior art keywords
- arc
- liquid level
- exhaust pipe
- level probe
- exhaust
- 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
Images
Landscapes
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
A micro-positive pressure liquid level probe anti-crystallization device comprises an exhaust ring sleeved outside a liquid level probe, wherein the exhaust ring is communicated with an air inlet pipe and is provided with a plurality of exhaust holes; the exhaust ring comprises a main arc exhaust pipe and an auxiliary arc exhaust pipe, and the auxiliary arc exhaust pipe is driven by the opening and closing driving mechanism to slide; the opening and closing driving mechanism is used for forming the exhaust ring into a closed ring or an open ring structure. The utility model applies positive air pressure outside the liquid level probe, thereby blocking ammonia gas from approaching the liquid level probe, reducing the crystallization amount of the liquid level probe and ensuring the accuracy of liquid level measurement; the exhaust ring can be opened and closed, so that the exhaust ring can be sleeved from the side part of the liquid level probe, and the exhaust ring is convenient to mount no matter how long or what shape the liquid level probe is.
Description
Technical Field
The utility model belongs to urea pyrolysis ammonia preparation denitration field of thermal power plant, in particular to crystallization device is prevented to pressure-fired liquid level probe.
Background
The thermal power generating unit is generally provided with an ammonia area, and ammonia for denitration of all the units is led from the ammonia area. Liquid ammonia is toxic gas, and the storage capacity of the liquid ammonia reaches a certain limit and belongs to a major hazard source; the mixture of ammonia and air within the explosion limit can be combusted and exploded when meeting open fire, and great threat is caused to workers and power generation production; and in recent years, ammonia leakage and explosion accidents frequently occur in China. The pyrolysis of urea to ammonia has become a reliable alternative.
In the urea pyrolysis process flow, the liquid level measurement of the urea dissolving tank is very critical. Because urea is easy to crystallize and easily condenses on the surface of the probe, measurement abnormality is caused. Therefore, how to avoid the crystallization of the liquid level probe is the problem to be solved by the technical scheme.
Disclosure of Invention
In view of the technical problems in the background art, the crystallization prevention device for the micro-positive pressure liquid level probe provided by the utility model prevents ammonia gas from approaching the liquid level probe by applying positive air pressure outside the liquid level probe, thereby reducing the crystallization amount of the liquid level probe and ensuring the accuracy of liquid level measurement; the exhaust ring can be opened and closed, so that the exhaust ring can be sleeved from the side part of the liquid level probe, and the exhaust ring is convenient to mount no matter how long or what shape the liquid level probe is.
In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:
a micro-positive pressure liquid level probe anti-crystallization device comprises an exhaust ring sleeved outside a liquid level probe, wherein the exhaust ring is communicated with an air inlet pipe and is provided with a plurality of exhaust holes; the exhaust ring comprises a main arc exhaust pipe and an auxiliary arc exhaust pipe, and the auxiliary arc exhaust pipe is driven by the opening and closing driving mechanism to slide; the opening and closing driving mechanism is used for forming the exhaust ring into a closed ring or an open ring structure.
In the preferred scheme, the auxiliary arc-shaped exhaust pipe is inserted into the main arc-shaped exhaust pipe, and a plurality of exhaust holes are formed in the bottoms of the main arc-shaped exhaust pipe and the auxiliary arc-shaped exhaust pipe.
In a preferred scheme, a first air inlet is formed in the side part of the main arc-shaped exhaust pipe, a second air inlet is formed in the side part of the auxiliary arc-shaped exhaust pipe, and when the main arc-shaped exhaust pipe and the auxiliary arc-shaped exhaust pipe are closed, the first air inlet is opposite to the second air inlet; the first air inlet is connected with an air inlet pipe.
In a preferred scheme, the opening and closing driving mechanism comprises an arc-shaped sliding chute arranged on the main arc-shaped exhaust pipe and an arc-shaped rack arranged on the auxiliary arc-shaped exhaust pipe, and the arc-shaped rack is matched with the arc-shaped sliding chute; the arc-shaped rack is meshed with the driving gear, and the driving gear is coaxially connected with the rotating rod.
In a preferable scheme, a supporting plate is arranged at the edge of the main arc exhaust pipe, and the driving gear is rotatably arranged on the supporting plate.
In a preferred scheme, the rotating rod is used for being connected with the handle.
In the preferred scheme, the main arc-shaped exhaust pipe and the auxiliary arc-shaped exhaust pipe are both arc-shaped square pipe structures.
In the preferred scheme, the arc degree of the main arc exhaust pipe ranges from 210 degrees to 270 degrees, and the arc degree of the auxiliary arc exhaust pipe ranges from 180 degrees to 210 degrees.
This patent can reach following beneficial effect:
the utility model discloses during the installation, earlier rotate vice arc blast pipe, make the exhaust ring form the opening, embolia exhaust ring opening one end from the liquid level probe lateral part, control the dwang again and drive vice arc blast pipe and rotate, make the exhaust ring form closed structure. After the air source is connected, the air pressure is adjusted by the filtering pressure reducing valve. The positive air pressure is applied to the outside of the liquid level probe, so that ammonia gas is prevented from being close to the liquid level probe, the crystallization amount of the liquid level probe is reduced, and the accuracy of liquid level measurement is guaranteed. The exhaust ring that this technical scheme provided can realize the switching to can cup joint the exhaust ring from liquid level probe lateral part, no matter what liquid level probe length is how much or what shape, all be convenient for install the exhaust ring.
Drawings
The invention will be further explained with reference to the following figures and examples:
FIG. 1 is an installation effect diagram of the present invention (at this time, the liquid level probe is an ultrasonic non-contact probe);
FIG. 2 is an installation effect diagram of the present invention (at this time, the liquid level probe is a contact probe);
FIG. 3 is a first three-dimensional structure diagram of the present invention;
FIG. 4 is a second three-dimensional structural diagram of the present invention;
FIG. 5 is a connection diagram of the main arc exhaust pipe and the auxiliary arc exhaust pipe of the present invention;
FIG. 6 is a first three-dimensional structure diagram of the auxiliary arc exhaust pipe of the present invention;
FIG. 7 is a second three-dimensional structure diagram of the auxiliary arc-shaped exhaust pipe of the present invention;
FIG. 8 is a three-dimensional structure diagram of the auxiliary arc exhaust pipe of the present invention;
fig. 9 is a three-dimensional structure diagram of the main arc exhaust pipe of the present invention.
In the figure: the device comprises a liquid level probe 1, an exhaust ring 2, a main arc exhaust pipe 21, an auxiliary arc exhaust pipe 22, a first air inlet 23, a second air inlet 24, an air inlet pipe 3, an opening and closing driving mechanism 4, an arc sliding groove 41, an arc rack 42, a driving gear 43, a rotating rod 44, a supporting plate 5, a handle 6 and a urea solution storage tank 7.
Detailed Description
The preferable scheme is as shown in fig. 1 to 9, the micro-positive pressure liquid level probe anti-crystallization device comprises an exhaust ring 2 sleeved outside a liquid level probe 1, wherein the exhaust ring 2 is communicated with an air inlet pipe 3, and a plurality of exhaust holes are formed in the exhaust ring 2; the exhaust ring 2 comprises a main arc exhaust pipe 21 and an auxiliary arc exhaust pipe 22, and the auxiliary arc exhaust pipe 22 is driven by the opening and closing driving mechanism 4 to slide; the opening and closing driving mechanism 4 is used for forming the exhaust ring 2 into a closed ring or an open ring structure.
The air inlet pipe 3 is used for being communicated with an air source, the filter pressure reducing valve is arranged on the air inlet pipe 3, so that the air pressure is adjusted, the outlet pressure of the air inlet pipe 3 can be set to be 0.13-0.15MPa, and the ammonia gas is prevented from being close to the liquid level probe 1 by applying the positive air pressure outside the liquid level probe 1, so that the crystallization amount of the liquid level probe 1 is reduced, and the accuracy of measuring the liquid level is ensured.
The exhaust ring 2 that this technical scheme provided can realize the switching to can cup joint exhaust ring 2 from 1 lateral part of liquid level probe, no matter 1 length of liquid level probe, all be convenient for install exhaust ring 2.
Furthermore, the auxiliary arc-shaped exhaust pipe 22 is inserted in the main arc-shaped exhaust pipe 21, and a plurality of exhaust holes are formed in the bottoms of the main arc-shaped exhaust pipe 21 and the auxiliary arc-shaped exhaust pipe 22. As shown in fig. 1, a common ultrasonic probe is of a horn-shaped structure, if the opening-closing type exhaust ring 2 is not adopted, the diameter of the exhaust ring 2 can be made larger, and after the diameter of the exhaust ring 2 is increased, firstly, the occupied space is large, secondly, gas is not concentrated enough, and the purging effect is poor. The exhaust ring 2 with the opening-closing structure in the technical scheme can be suitable for probes of more types, such as shown in fig. 2.
Further, a first air inlet 23 is formed in the side portion of the main arc-shaped exhaust pipe 21, a second air inlet 24 is formed in the side portion of the auxiliary arc-shaped exhaust pipe 22, and when the main arc-shaped exhaust pipe 21 and the auxiliary arc-shaped exhaust pipe 22 are closed, the first air inlet 23 is opposite to the second air inlet 24; the first intake port 23 is connected to the intake pipe 3.
When the main arc exhaust pipe 21 and the sub arc exhaust pipe 22 are closed, the first intake port 23 overlaps with the second intake port 24, and the exhaust holes at the bottom of the main arc exhaust pipe 21 and the sub arc exhaust pipe 22 also overlap, thus achieving gas communication.
Further, the opening and closing driving mechanism 4 includes an arc-shaped chute 41 disposed on the main arc-shaped exhaust pipe 21 and an arc-shaped rack 42 disposed on the auxiliary arc-shaped exhaust pipe 22, and the arc-shaped rack 42 is adapted to the arc-shaped chute 41; the arc-shaped rack 42 is meshed with a driving gear 43, and the driving gear 43 is coaxially connected with a rotating rod 44. The driving gear 43 is rotated, and the driving gear 43 drives the secondary arc exhaust pipe 22 to rotate.
Further, a support plate 5 is provided at the edge of main arc exhaust pipe 21, and a drive gear 43 is rotatably provided on support plate 5. The driving gear 43 may be connected with the support plate 5 through a bearing.
Further, a rotating lever 44 is used for connection with the handle 6. The handle 6 may be a crank or a dial.
Further, the main arc exhaust pipe 21 and the auxiliary arc exhaust pipe 22 are both arc square pipe structures.
Further, the arc degree of the main arc exhaust pipe 21 ranges from 210 degrees to 270 degrees, and preferably ranges from 270 degrees; the arc degree of the auxiliary arc-shaped exhaust pipe 22 is 180-210 degrees; preferably slightly greater than 180.
The working principle of the whole device is as follows:
when the device is installed, the auxiliary arc exhaust pipe 22 is rotated to form an opening on the exhaust ring 2, the open end of the exhaust ring 2 is sleeved in from the side part of the liquid level probe 1, and then the rotating rod 44 is controlled to drive the auxiliary arc exhaust pipe 22 to rotate to form a closed structure on the exhaust ring 2. After the air source is connected, the air pressure is adjusted by the filtering pressure reducing valve.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and should not be considered as limitations of the present invention, and the protection scope of the present invention should be defined by the technical solutions described in the claims, and includes equivalent alternatives of technical features in the technical solutions described in the claims. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (8)
1. The utility model provides a crystallization device is prevented to pressure-fired liquid level probe which characterized in that: the liquid level probe comprises an exhaust ring (2) sleeved outside a liquid level probe (1), wherein the exhaust ring (2) is communicated with an air inlet pipe (3), and a plurality of exhaust holes are formed in the exhaust ring (2); the exhaust ring (2) comprises a main arc exhaust pipe (21) and an auxiliary arc exhaust pipe (22), and the auxiliary arc exhaust pipe (22) is driven by the opening and closing driving mechanism (4) to slide; the opening and closing driving mechanism (4) is used for forming the exhaust ring (2) into a closed ring or an open ring structure.
2. The anti-crystallization device for the micro-positive pressure liquid level probe according to claim 1, wherein: the auxiliary arc-shaped exhaust pipe (22) is inserted in the main arc-shaped exhaust pipe (21), and a plurality of exhaust holes are formed in the bottoms of the main arc-shaped exhaust pipe (21) and the auxiliary arc-shaped exhaust pipe (22).
3. The anti-crystallization device for the micro-positive pressure liquid level probe according to claim 2, wherein: a first air inlet (23) is formed in the side portion of the main arc-shaped exhaust pipe (21), a second air inlet (24) is formed in the side portion of the auxiliary arc-shaped exhaust pipe (22), and when the main arc-shaped exhaust pipe (21) and the auxiliary arc-shaped exhaust pipe (22) are closed, the first air inlet (23) is opposite to the second air inlet (24); the first air inlet (23) is connected with the air inlet pipe (3).
4. The anti-crystallization device for the micro-positive pressure liquid level probe according to claim 2 or 3, wherein: the opening and closing driving mechanism (4) comprises an arc-shaped sliding groove (41) arranged on the main arc-shaped exhaust pipe (21) and an arc-shaped rack (42) arranged on the auxiliary arc-shaped exhaust pipe (22), and the arc-shaped rack (42) is matched with the arc-shaped sliding groove (41); the arc-shaped rack (42) is meshed with the driving gear (43), and the driving gear (43) is coaxially connected with the rotating rod (44).
5. The anti-crystallization device for the micro-positive pressure liquid level probe according to claim 4, wherein: the edge of the main arc exhaust pipe (21) is provided with a support plate (5), and a driving gear (43) is rotatably arranged on the support plate (5).
6. The anti-crystallization device for the micro-positive pressure liquid level probe according to claim 5, wherein: the rotating rod (44) is used for being connected with the handle (6).
7. The anti-crystallization device for the micro-positive pressure liquid level probe according to claim 6, wherein: the main arc exhaust pipe (21) and the auxiliary arc exhaust pipe (22) are both arc square pipe structures.
8. The anti-crystallization device for the micro-positive pressure liquid level probe according to claim 7, wherein: the arc degree of the main arc exhaust pipe (21) ranges from 210 degrees to 270 degrees, and the arc degree of the auxiliary arc exhaust pipe (22) ranges from 180 degrees to 210 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022344015.3U CN213559073U (en) | 2020-10-20 | 2020-10-20 | Crystallization-proof device for micro-positive pressure liquid level probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022344015.3U CN213559073U (en) | 2020-10-20 | 2020-10-20 | Crystallization-proof device for micro-positive pressure liquid level probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213559073U true CN213559073U (en) | 2021-06-29 |
Family
ID=76526261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022344015.3U Active CN213559073U (en) | 2020-10-20 | 2020-10-20 | Crystallization-proof device for micro-positive pressure liquid level probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213559073U (en) |
-
2020
- 2020-10-20 CN CN202022344015.3U patent/CN213559073U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN213559073U (en) | Crystallization-proof device for micro-positive pressure liquid level probe | |
| CN213397737U (en) | Sampler for water treatment detection | |
| CN212512528U (en) | Industrial kiln with denitration function | |
| CN213060864U (en) | Temperature control device with protection function for fermentation tank | |
| CN112856021A (en) | Regulating mechanism of high-temperature ball valve | |
| CN204592379U (en) | A kind of ball valve preventing oil smoke counteroffensive in flue | |
| CN112323914A (en) | Pre-pressurizing energy-saving water tank non-negative-pressure water supply equipment | |
| CN205978547U (en) | Automatic leak protection valve | |
| CN222436620U (en) | Device for reducing dissolved oxygen in condensed water | |
| CN218832310U (en) | Police instrument cabinet | |
| CN219242707U (en) | Butterfly valve with dustproof function | |
| CN218454986U (en) | Pipeline orifice plate pressure taking integrated valve set | |
| CN218480631U (en) | Gas boiler with flue gas purification function | |
| CN221607912U (en) | Sludge fermentation tank | |
| CN214789183U (en) | Three-way ball valve convenient to install and connect | |
| CN213871139U (en) | Novel spherical offset pneumatic clock valve | |
| CN216430106U (en) | Oscillating double-locking oil cylinder for servomotor | |
| CN222336136U (en) | Heat exchange device for boiler | |
| CN221434243U (en) | Fuel pipeline cleaning device | |
| CN213995423U (en) | A device for assisting ammonia water to absorb coal-fired flue gas for desulfurization and denitrification | |
| CN220568452U (en) | Liquid airtight sampler | |
| CN213575578U (en) | Electric butterfly valve for heat exchanger on petroleum production line | |
| CN214679793U (en) | Intelligent fire hydrant leakage control valve | |
| CN219453971U (en) | Plunger heat accumulating type waste gas incinerator | |
| CN219640035U (en) | Supercharging air storage tank |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |