CN208902330U - A kind of anti-blocking pressure measuring unit - Google Patents
A kind of anti-blocking pressure measuring unit Download PDFInfo
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- CN208902330U CN208902330U CN201821956176.4U CN201821956176U CN208902330U CN 208902330 U CN208902330 U CN 208902330U CN 201821956176 U CN201821956176 U CN 201821956176U CN 208902330 U CN208902330 U CN 208902330U
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Abstract
The utility model discloses a kind of anti-blocking pressure measuring units, comprising: one end of inverted U pressure-measuring pipe, the inverted U pressure-measuring pipe is connected to coal pulverizer, and the other end is connected to pressure transmitter；And the intermediate electric heater for being provided with temperature controller outside the inverted U pressure-measuring pipe.Anti-blocking pressure measuring unit provided by the utility model has prevented convection current and moisture condensation in pressure measuring unit, to achieve the effect that anti-blocking.
Description
Technical field
The utility model relates to pulverized coal preparation technical field, more particularly to a kind of anti-blocking pressure measuring unit.
Background technique
Coal pulverizer is widely used in the industries such as cement, coal-fired thermal power generation, metal smelt.Raw coal is milled into and is conformed to
It needs to be passed through hot wind during the coal dust asked, raw coal is dried and pulverized coal conveying.Therefore, coal pulverizer hot-wind inlet and go out
The pressure difference value of mouth runs coal pulverizer most important, it is necessary to which measurement is accurate and reliable, to guarantee pressure difference value within the allowable range.
In addition, being also to be carried out by way of measuring pressure to the measurement of flow velocity in pulverized coal channel.It, usually will pressure when pressure measurement
Power transmitter is connected to by pressure-measuring pipe and coal pulverizer inside, or is connected to pulverized coal channel.
But in actual application, it often will cause pressure-measuring pipe to be blocked or pressure transmitter measurement table by coal dust
Face adheres to the coal dust of a laminate knot, can not carry out accurate pressure measurement.
Therefore, how a kind of the problem of preventing the pressure measuring unit blocked from being those skilled in the art's urgent need to resolve is provided.
Utility model content
In view of this, the present invention provides a kind of anti-blocking pressure measuring unit, prevent convection current and moisture condensation in pressure measuring unit,
It is anti-blocking to achieve the effect that.
To achieve the goals above, the utility model adopts the following technical solution:
A kind of anti-blocking pressure measuring unit, comprising: one end of inverted U pressure-measuring pipe, the inverted U pressure-measuring pipe is connected to coal pulverizer,
The other end is connected to pressure transmitter；And the intermediate electric heater for being provided with temperature controller outside the inverted U pressure-measuring pipe.
Preferably, the inverted U pressure-measuring pipe includes: upper pipe portion, push pipe portion and down leg；And the upper pipe portion, the top
Sequentially integrally connected forms inverted U pressure-measuring pipe for pipe portion and the down leg；Wherein, the upper pipe portion far from the push pipe portion one
End is connected to the coal pulverizer, and the down leg is connected to far from the one end in the push pipe portion with the pressure transmitter.
Preferably, the temperature that the electric heater controls the inverted U pressure-measuring pipe is higher by 10~20 DEG C of the coal pulverizer.
Preferably, the temperature that the electric heater controls the push pipe portion is higher than upper pipe portion and the coal pulverizer interface
Temperature, and the temperature higher than down leg and the pressure transmitter interface.
Preferably, the electric heater is threadedly secured to intermediate outside the inverted U pressure-measuring pipe.
Preferably, the electric heater is connected with temperature sensor；Wherein, the temperature sensor is for measuring the mill
The internal temperature of coal machine, and send the temperature measured to electric heater with temperature controller.
It can be seen via above technical scheme that compared with prior art, the utility model, which discloses, provides a kind of anti-blocking survey
Pressure device, pressure-measuring pipe use inverted U-shaped structure, and one end is connected to coal pulverizer, and the other end is connected to pressure transmitter, among U-tube
Place the electric heater with temperature controller.According to the temperature inside coal pulverizer, the heating temperature of electric heater is set, pressure-measuring pipe is made
Temperature is higher by 10~20 DEG C of coal pulverizer, and the temperature at the top of such U is consistently higher than the temperature with coal pulverizer interface, so in upper tube
Convection current will not be generated.Similarly, the temperature at the top of U is consistently higher than the temperature with pressure transmitter interface, so will not in down tube
Generate convection current.Since temperature is higher than coal pulverizer and will not more tie in pressure-measuring pipe so not condensing in coal pulverizer in pressure-measuring pipe
Dew, has effectively prevented convection current and moisture condensation in pressure measuring unit, to achieve the effect that anti-blocking.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is coal pulverizer device for pressure measurement layout drawing provided by the utility model；
Fig. 2 is convection effect schematic diagram in pressure-measuring pipe provided by the utility model；
Fig. 3 is the schematic diagram of anti-blocking pressure measuring unit provided by the utility model；
Fig. 4 is the scheme of installation one of the electric heater provided by the utility model with temperature controller；
Fig. 5 is the scheme of installation two of the electric heater provided by the utility model with temperature controller.
Wherein, 1- coal pulverizer；2- hot-wind inlet；The lower part 3- pressure measuring unit；Pressure measuring unit in the middle part of 4-；The top 5- is surveyed
Pressure device；6- pulverized coal channel pressure measuring unit；7- discharge pipe；8- raw coal entrance；9- thermal updrafts；10- low temperature is surveyed
Pressure pipe inner wall；11- declines cold airflow；12- and coal pulverizer interface；13- upper tube；14-U shape tube top portion；15- down tube；16-
With pressure transmitter interface；Electric heater of the 17- with temperature controller.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It is due to original that utility model people, which passes through to the reason of researching and analysing discovery, causing this phenomenon is carried out the case where blocking,
Contain moisture in coal, after being entered the hot-air seasoning of coal pulverizer, moisture evaporates to form vapor, and the temperature in coal pulverizer is higher than dew
Point, moisture exists in the form of steam state at this time, will not condense.Referring to attached drawing 1 and attached drawing 2, pressure measuring unit is mounted on outside coal pulverizer,
Temperature, since there are temperature differences, causes pressure-measuring pipe is interior to form convection effect lower than inside coal pulverizer.Coal pulverizer inner aqueous point is more
Hot gas thermal updrafts 9 are formed in pressure-measuring pipe, can pressure-measuring pipe when thermal updrafts 9 encounter low temperature pressure-measuring pipe inner wall 10
Inner wall condenses to form small water droplet, forms " mud " in pressure-measuring pipe inner wall after the fine breeze of faciola is mixed with water droplet in air-flow, " mud
After slurry " is dry, coal dust in " mud " is hardened to be adhered to pressure-measuring pipe inner wall, so continuous circulation, eventually leads to pressure-measuring pipe and is blocked
Plug, pressure measuring unit failure.
It is obtained according to above analysis, the necessary condition to result in blockage has three: fine breeze, convection current and moisture condensation, and lack
Any one condition can avoid blocking.Based on this principle, the utility model provides a kind of pressure measuring unit, effectively prevents
Convection current and moisture condensation in pressure-measuring pipe, to achieve the effect that anti-blocking.
Referring to attached drawing 3, the utility model embodiment discloses anti-blocking pressure measuring unit, comprising: inverted U pressure-measuring pipe, inverted U are surveyed
One end of pressure pipe is connected to coal pulverizer, and the other end is connected to pressure transmitter；And temperature is provided among inverted U pressure-measuring pipe outside
Control the electric heater 17 of device.
Preferably, inverted U pressure-measuring pipe includes: upper pipe portion 13,14 down leg 15 of push pipe portion；And upper pipe portion 13, push pipe portion 14
Sequentially integrally connected forms inverted U pressure-measuring pipe with down leg 15；Wherein, one end and coal pulverizer far from push pipe portion 14 of upper pipe portion 13
Connection, down leg 15 are connected to far from the one end in push pipe portion 14 with pressure transmitter.
Preferably, the temperature that electric heater 17 controls inverted U pressure-measuring pipe is higher by 10~20 DEG C of coal pulverizer.
Preferably, the temperature that electric heater 17 controls push pipe portion 14 is higher than the temperature of upper pipe portion 13 and coal pulverizer interface 12
Degree, and higher than the temperature of down leg 15 and pressure transmitter interface 16.
Preferably, the electric heater is threadedly secured to intermediate outside the inverted U pressure-measuring pipe.Refer to attached drawing 4
With attached drawing 5, inverted U pressure-measuring pipe outside centre, which accommodates, has screw thread on the space wall of electric heater, also has on electric heater
Screw thread, electric heater are threadedly secured to intermediate outside inverted U pressure-measuring pipe.
Preferably, electric heater 17 is connected with temperature sensor；Wherein, temperature sensor is for measuring the coal pulverizer
Internal temperature, and the temperature measured is sent to the electric heater 17 with temperature controller.
Using upper type as intelligent, the implementation of automation.It in specific implementation, can also be according to coal pulverizer
Type and the coal quality milled determine the temperature of coal pulverizer, this temperature value be it is known, the effect of temperature controller be exactly basis
The coal pulverizer temperature known, the temperature that setting inverted U pressure-measuring pipe is heated to.When the temperature of inverted-loop tube is lower than setting value, electricity adds
Hot device electrified regulation, after temperature reaches setting value, electric heater power-off.
And the temperature at pressure transmitter is exactly environment temperature, so the temperature of pressure transmitter is less than coal pulverizer certainly
Temperature, do not need through temperature sensor measuring temperature again.
Pressure-measuring pipe uses inverted U-shaped structure, and one end is connected to coal pulverizer, and the other end is connected to pressure transmitter, among U-tube
Place the electric heater with temperature controller.According to the temperature inside coal pulverizer, the heating temperature of electric heater is set, pressure-measuring pipe is made
Temperature is higher by 10~20 DEG C of coal pulverizer, and the temperature at the top of such U is consistently higher than the temperature with coal pulverizer interface, so in upper tube
Convection current will not be generated.Similarly, the temperature at the top of U is consistently higher than the temperature with pressure transmitter interface, so will not in down tube
Generate convection current.Since temperature is higher than coal pulverizer and will not more tie in pressure-measuring pipe so not condensing in coal pulverizer in pressure-measuring pipe
Dew.The necessary condition to result in blockage has three, solves two of them, so entirely prevented the generation of blocking.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.
Claims (6)
1. a kind of anti-blocking pressure measuring unit characterized by comprising inverted U pressure-measuring pipe, one end of the inverted U pressure-measuring pipe and mill
The connection of coal machine, the other end are connected to pressure transmitter；And the intermediate electricity for being provided with temperature controller adds outside the inverted U pressure-measuring pipe
Hot device.
2. a kind of anti-blocking pressure measuring unit according to claim 1, which is characterized in that the inverted U pressure-measuring pipe includes: upper tube
Portion, push pipe portion and down leg；And sequentially integrally connected composition inverted U is surveyed for the upper pipe portion, the push pipe portion and the down leg
Pressure pipe；Wherein, the upper pipe portion is connected to far from the one end in the push pipe portion with the coal pulverizer, and the down leg is far from the top
One end of pipe portion is connected to the pressure transmitter.
3. a kind of anti-blocking pressure measuring unit according to claim 1, which is characterized in that the electric heater control U
The temperature of type pressure-measuring pipe is higher by 10~20 DEG C of the coal pulverizer.
4. a kind of anti-blocking pressure measuring unit according to claim 2, which is characterized in that the electric heater controls the push pipe
The temperature in portion is higher than the temperature of upper pipe portion and the coal pulverizer interface, and is higher than down leg and the pressure transmitter interface
The temperature at place.
5. according to a kind of anti-blocking pressure measuring unit according to claim 1, which is characterized in that the electric heater passes through screw thread
It is fixed on intermediate outside the inverted U pressure-measuring pipe.
6. a kind of anti-blocking pressure measuring unit described in -5 any one according to claim 1, which is characterized in that the electric heater connects
It is connected to temperature sensor；Wherein, the temperature sensor is used to measure the internal temperature of the coal pulverizer, and the temperature that will be measured
Degree sends the electric heater with temperature controller to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821956176.4U CN208902330U (en) | 2018-11-26 | 2018-11-26 | A kind of anti-blocking pressure measuring unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821956176.4U CN208902330U (en) | 2018-11-26 | 2018-11-26 | A kind of anti-blocking pressure measuring unit |
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| CN208902330U true CN208902330U (en) | 2019-05-24 |
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| CN201821956176.4U Active CN208902330U (en) | 2018-11-26 | 2018-11-26 | A kind of anti-blocking pressure measuring unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341938A (en) * | 2018-11-26 | 2019-02-15 | 上海意丰机电科技开发有限公司 | A kind of anti-blocking pressure measuring unit |
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2018
- 2018-11-26 CN CN201821956176.4U patent/CN208902330U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109341938A (en) * | 2018-11-26 | 2019-02-15 | 上海意丰机电科技开发有限公司 | A kind of anti-blocking pressure measuring unit |
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