CN204490019U - Ash-transmission system blocks up grey check system - Google Patents
Ash-transmission system blocks up grey check system Download PDFInfo
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- CN204490019U CN204490019U CN201420860289.XU CN201420860289U CN204490019U CN 204490019 U CN204490019 U CN 204490019U CN 201420860289 U CN201420860289 U CN 201420860289U CN 204490019 U CN204490019 U CN 204490019U
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Abstract
A kind of ash-transmission system blocks up grey check system, and comprise multiple air valve and multiple air pressure difference sensor, multiple air valve is the 1 to the n-th air valve, and n value is for being greater than 1, and the 1 to the n-th air valve is arranged on gas transmission line successively with preset space length; Wherein the first end of the 1st air valve is communicated with gas transmission line, and the second end is communicated with the first tracheae of the first pressure interface being connected to the 1st air pressure difference sensor; The first end of the i-th air valve is communicated with gas transmission line, and the second end is communicated with the second tracheae of the second pressure interface and the first tracheae of the first pressure interface of being connected to the i-th air pressure difference sensor being connected to the i-th-1 air pressure difference sensor; The first end of the n-th air valve is communicated with gas transmission line, and the second end is communicated with the second tracheae of the second pressure interface being connected to the (n-1)th air pressure difference sensor; What first pressure chamber be connected with the first pressure interface of m air pressure difference sensor passed into is the pressure that the air-flow of gas transmission line at m air valve place produces.The utility model solves the problem cannot finding out rapidly inner pipeline plug ash point, has accurately the plurality of advantages such as time saving and energy saving fast.
Description
Technical field
The utility model belongs to flying ash in electric power plant conveying technology field, particularly relates to a kind of ash-transmission system and blocks up grey check system.
Background technology
In prior art, flying ash in electric power plant delivery system adopts malleation thick and thin phase burner mode, and after putting into operation, ash conveying pipe latch up phenomenon is one of fault of more difficult eliminating.Ash-transmission system blocks up ash can cause ash bucket dust stratification, and dust collection efficiency is reduced, and is unfavorable for the protection of power station environment.Existing ash-transmission system unimpeded mode is pipeline place after outlet storehouse pump and installs a unimpeded pipe and manual unimpeded valve (as shown in Figure 1) between ash bucket, the pressure in pipeline and ash bucket negative pressure is utilized to be discharged in ash bucket by the ash in pipeline, until the defeated grey pressure of ash-transmission system pressure transformer display drops to 0bar, then restart ash-transmission system to run, if also have stifled ash to occur, continue to repeat above-mentioned unimpeded process.But, if the stifled ash of pipeline is away from unimpeded valve position, so unimpeded process repeatedly will could drain into the ash in pipeline in ash bucket completely, time serious, unimpeded valve does not have the effect of ash discharge, this needs to tear pipe inspection open, extend the idle time of ash-transmission system, too increase the work capacity of operation and service personnel.
Utility model content
In order to overcome the above-mentioned problem existed in prior art, the utility model proposes the check system that a kind of pipeline blocks up ash, can investigate pipeline quickly and accurately and block up grey part, use manpower and material resources sparingly cost.
For realizing above object, the utility model proposes a kind of ash-transmission system and block up grey check system, described ash-transmission system blocks up grey check system and comprises multiple air valve and multiple air pressure difference sensor, described multiple air valve is the 1 to the n-th air valve, n altogether, n value is for being greater than 1, and described 1 to the n-th air valve is arranged on gas transmission line successively with preset space length, described multiple air pressure difference sensor is the 1 to the (n-1)th air pressure difference sensor, n-1 altogether; Wherein the first end of the 1st air valve is communicated with described gas transmission line, and the second end is communicated with the first tracheae 104 of the first pressure interface being connected to the 1st air pressure difference sensor; The first end of the i-th air valve is communicated with described gas transmission line, second end is communicated with the second tracheae of the second pressure interface and the first tracheae of the first pressure interface of being connected to the i-th air pressure difference sensor being connected to the i-th-1 air pressure difference sensor, wherein 2≤i≤n-1; The first end of the n-th air valve is communicated with described gas transmission line, and the second end is communicated with the second tracheae 105 of the second pressure interface being connected to the (n-1)th air pressure difference sensor; To make when all air valves are all opened, what first pressure chamber be connected with the first pressure interface of m air pressure difference sensor passed into is the pressure that the air-flow of gas transmission line at m air valve place produces, what second pressure chamber be connected with the second pressure interface of m air pressure difference sensor passed into is the pressure that the air-flow of gas transmission line at m+1 air valve place produces, wherein 1≤m≤n-1.
According to an aspect of the present utility model, described air pressure difference sensor has the telltale of display force value.
According to an aspect of the present utility model, described ash-transmission system blocks up grey check system and also comprises the alert device be connected with described multiple air pressure difference sensor.
According to an aspect of the present utility model, described alert device comprises multiple interface circuit, multiple comparator circuit and combined aural and visual alarm, wherein: each of described multiple interface circuit is connected with an air pressure difference sensor; An input end of each comparator circuit of described multiple comparator circuit is connected with the mouth of each interface circuit of described multiple interface circuit, and another input end of each comparator circuit of described multiple comparator circuit receives predetermined threshold value; The mouth of each comparator circuit of described multiple comparator circuit is connected with combined aural and visual alarm.
According to an aspect of the present utility model, described air valve is manual ball valve.
As can be seen here, according to this programme, gas transmission line is divided into the multistage being connected to multiple air valve, like this, just can judges that stifled ash has appearred in which segmentation of gas transmission line easily by the draught head obtained between adjacent air valve; In addition, additionally provide a kind of alarm circuit of the signal that gives the alarm more easily, occurred stifled ash with which segmentation of automatic-prompting testing staff, decreased the work capacity of testing staff, improve detection efficiency, decrease standing time.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing ash-transmission system unimpeded mode;
Fig. 2 is the air valve overall installation site plan blocking up grey check system according to the ash-transmission system of the utility model embodiment;
Fig. 3 is the detailed schematic of the stifled grey check system according to the utility model embodiment;
Fig. 4 is the detailed schematic of the alert device of stifled grey check system according to another embodiment of the utility model.
Detailed description of the invention
The following stated is better embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
When boiler normally runs, flying dust is accumulated in electric duster ash bucket exit.Then entering the concentrated phase MD pump that each outlet below is installed, take pressurized air as power, through Geldart-D particle to terminal ash storehouse.MD pumping system is according to the defeated ash of frequency interval of setting, and such as eight pumps share a transfer line, deliver to cinder storehouse.Defeated grey process is that the storehouse pump inlet dome valve on a pipeline is opened, and ash falls under gravity in pump.During filler, blow off valve opens the air discharge making to replace.Each MD pump is equipped with level-sensing device, indicates whether fill material.When level-sensing device is capped, through a short delay, pump is completely filled, import dome valve and exhaust valve closure.This can continue repetition until 2 MD pumps are filled, remaining admission valve and exhaust valve closure.When all admission valves and exhaust valve closure and after sealing, outlet pump fluidization air valve and Gas mixing valve are opened.Fluidization air valve order on MD pump is opened, and there is short time gap centre, and last main pump fluidization air valve is opened.Ash is entered transfer line by the conveying air entering MD pumping system from pump, finally sends into grey storehouse.When material is discharged into terminal ash storehouse, delivery pressure reduces, and be positioned at the pressure transformer display <0.3Barg on main pump pipeline, conveying choker relief valve is closed, and circulation terminates.And when defeated grey pressure increase in defeated grey process to 4Barg maintenance is not fallen, can think that stifled ash appears in ash-transmission system, but as shown in Figure 1, because ash pipeline line is very long, accurately cannot judge stifled grey particular location.
In order to overcome this problem, as shown in Figure 2, described ash pipeline line 100 installs multiple air valve with preset space length.In one embodiment, described preset space length is 10 to 20 meters.
The concrete structure of stifled grey check system is described below with reference to Fig. 3.
As shown in Figure 3, described stifled grey check system comprise as described in Figure 2 with predetermined space install multiple air valves 101 (be sequentially the 1 to the n-th air valve, n altogether, wherein n is greater than 1) and multiple air pressure difference sensor 102 (being sequentially the 1 to the (n-1)th air pressure difference sensor, n-1 altogether).Wherein, the first end of the 1st air valve is communicated with described gas transmission line 100, and the second end is communicated with the first tracheae 104 of the first pressure interface being connected to the 1st air pressure difference sensor; The first end of the i-th air valve (2≤i≤n-1) is communicated with described gas transmission line 100, and the second end is communicated with the second tracheae 105 of the second pressure interface and the first tracheae 104 of the first pressure interface of being connected to the i-th air pressure difference sensor being connected to the i-th-1 air pressure difference sensor; The first end of the n-th air valve is communicated with described gas transmission line 100, and the second end is communicated with the second tracheae 105 of the second pressure interface being connected to the (n-1)th air pressure difference sensor.According to this connection structure, when all air valves are all opened, what first pressure chamber (being connected with the first pressure interface) of m air pressure difference sensor (1≤m≤n-1) passed into is the pressure that the air-flow of gas transmission line at m air valve place produces, what the second pressure chamber (being connected with the second pressure interface) passed into is the pressure that the air-flow of gas transmission line at m+1 air valve place produces, thus m air pressure difference sensor can record the difference of pressure of the air-flow at two adjacent (m and m+1) gas transmission line places, air valve place.
When occurring stifled grey 106 in the gas transmission line between two adjacent air valves, see the compressed-air actuated air flow line in Fig. 2 and Fig. 3 shown in arrow, the stream pressure at the air valve place place before stifled ash 106 is more much bigger than the stream pressure value at the air valve place place after stifled ash 106, this is because the impact that pressurized air is subject to stifled ash causes the gas transmission line increased pressure before stifled ash, and the gas transmission line after stifled ash is unobstructed.
Therefore, in one embodiment, described air pressure difference sensor has the telltale of display force value.In this case, as described above, when grey pressure increase defeated in defeated grey process is not fallen to 4Barg maintenance, all air valves can be opened to make the line pressure at described air pressure difference sensor measurement adjacent two air valve places place poor by testing staff, when the difference of pressure of air pressure difference sensor display is higher than predetermined value, can think that the gas transmission line between two air valves relevant to this air pressure difference sensor exists stifled grey.
In addition, because the length of gas transmission line 101 is longer, testing staff goes to scene to check that the force value of air pressure difference sensor can waste many time one by one, therefore, as shown in Figure 4, in another embodiment, described stifled grey check system also has the alert device 200 be connected with all air pressure difference sensors.Below, the particular hardware structure of described alert device 200 is described with reference to Figure 4.
Described alert device 200 has multiple interface circuit 201, each of described multiple interface circuit 201 is connected with each in multiple air pressure difference sensor, that is, interface circuit is identical with the quantity of air pressure difference sensor and carried out connecting one to one.Like this, described interface circuit can receive the signal (such as voltage) exported from air pressure difference sensor.Described alert device 200 also has multiple comparator circuit 202, an input end of each comparator circuit is connected with the mouth of one of them interface circuit, another input end receives predetermined threshold value, that is, comparator circuit is for judging that whether the force value of air pressure difference sensor is higher than predetermined threshold value; The mouth of described multiple comparator circuit is connected with combined aural and visual alarm 203.When described comparator circuit exports the high level signal higher than predetermined threshold value, described combined aural and visual alarm (being such as multiple flash light) can send corresponding sound and light signal.Such as, with be connected to the 1st adjacent comparator circuit be connected with the air pressure difference sensor of the 2nd air valve judge force value higher than predetermined threshold value time, export high level signal to the flash light that is connected with this comparator circuit thus the signal that flashes, like this, testing staff just can judge that the gas transmission line between the 1st and the 2nd air valve there occurs stifled ash.Certainly, described combined aural and visual alarm can be other forms, such as buzzer phone, loudspeaker, telltale etc.
In an embodiment of the present utility model, described air valve is manual ball valve.
Should note; the detailed description of the invention that the utility model proposes and application are only the object of explanation; not as the restriction to the utility model protection domain, those skilled in the art can modify to meet actual needs to detailed description of the invention of the present utility model.
Claims (5)
1. ash-transmission system blocks up a grey check system, it is characterized in that:
Described ash-transmission system blocks up grey check system and comprises multiple air valve and multiple air pressure difference sensor, described multiple air valve is the 1 to the n-th air valve, n altogether, n value is for being greater than 1, described 1 to the n-th air valve is arranged on the gas transmission line of ash-transmission system successively with preset space length, described multiple air pressure difference sensor is the 1 to the (n-1)th air pressure difference sensor, n-1 altogether; Wherein
The first end of the 1st air valve is communicated with described gas transmission line, and the second end is communicated with first tracheae (104) of the first pressure interface being connected to the 1st air pressure difference sensor; The first end of the i-th air valve is communicated with described gas transmission line, second end is communicated with the second tracheae of the second pressure interface and the first tracheae of the first pressure interface of being connected to the i-th air pressure difference sensor being connected to the i-th-1 air pressure difference sensor, wherein 2≤i≤n-1; The first end of the n-th air valve is communicated with described gas transmission line, and the second end is communicated with second tracheae (105) of the second pressure interface being connected to the (n-1)th air pressure difference sensor; To make when all air valves are all opened, what first pressure chamber be connected with the first pressure interface of m air pressure difference sensor passed into is the pressure that the air-flow of gas transmission line at m air valve place produces, what second pressure chamber be connected with the second pressure interface of m air pressure difference sensor passed into is the pressure that the air-flow of gas transmission line at m+1 air valve place produces, wherein 1≤m≤n-1.
2. ash-transmission system according to claim 1 blocks up grey check system, it is characterized in that:
Described air pressure difference sensor has the telltale of display force value.
3. ash-transmission system according to claim 1 and 2 blocks up grey check system, it is characterized in that:
Described ash-transmission system blocks up grey check system and also comprises the alert device be connected with described multiple air pressure difference sensor.
4. ash-transmission system according to claim 3 blocks up grey check system, it is characterized in that:
Described alert device comprises multiple interface circuit, multiple comparator circuit and combined aural and visual alarm, wherein:
Each of described multiple interface circuit is connected with an air pressure difference sensor;
An input end of each comparator circuit of described multiple comparator circuit is connected with the mouth of each interface circuit of described multiple interface circuit, and another input end of each comparator circuit of described multiple comparator circuit receives predetermined threshold value;
The mouth of each comparator circuit of described multiple comparator circuit is connected with combined aural and visual alarm.
5. ash-transmission system according to claim 1 blocks up grey check system, it is characterized in that:
Described air valve is manual ball valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860289.XU CN204490019U (en) | 2014-12-30 | 2014-12-30 | Ash-transmission system blocks up grey check system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420860289.XU CN204490019U (en) | 2014-12-30 | 2014-12-30 | Ash-transmission system blocks up grey check system |
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| CN204490019U true CN204490019U (en) | 2015-07-22 |
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| CN201420860289.XU Active CN204490019U (en) | 2014-12-30 | 2014-12-30 | Ash-transmission system blocks up grey check system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405497A (en) * | 2018-02-12 | 2018-08-17 | 张顺元 | A kind of remover of pipeline endoparticle sediment |
| CN111219208A (en) * | 2020-01-15 | 2020-06-02 | 安徽蓝海之光科技有限公司 | Intelligent pipeline ponding alarm device in pit |
-
2014
- 2014-12-30 CN CN201420860289.XU patent/CN204490019U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108405497A (en) * | 2018-02-12 | 2018-08-17 | 张顺元 | A kind of remover of pipeline endoparticle sediment |
| CN111219208A (en) * | 2020-01-15 | 2020-06-02 | 安徽蓝海之光科技有限公司 | Intelligent pipeline ponding alarm device in pit |
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