CN207716447U - A kind of lime stone transport device - Google Patents

Abstract

The utility model discloses a kind of lime stone transport devices, the main points of its technical scheme are that：Include the tremie pipe for being connected to boiler and storage bin, blanking extension pipe is communicated with below tremie pipe, blower is communicated on tremie pipe, blower is connected with air blast air pump；Tremie pipe is equipped with blanking and opens and closes valve；By the way that blanking extension pipe is arranged and is connected to blower on it, achieve the effect that reduce limestone powder reflux.

Description

A kind of lime stone transport device

Technical field

Lime stone transportation technology in generating electricity the utility model is related to boiler, more particularly to a kind of lime stone transport device.

Background technology

Boiler in power plant needs to be passed through a large amount of limestone powder progress desulfurization in combustion.

Storage bin in the prior art for storing limestone powder is installed on the top of boiler, is communicated between the two Tremie pipe, setting lime stone opens and closes valve on tremie pipe.After opening lime stone keying valve, the lime stone in storage bin is in its own gravity Under the action of boiler entered by tremie pipe.

It is in place of the deficiencies in the prior art, boiler will produce the air pressure of increasing during catching, when air pressure is more than stone When the gravity of lime stone powder, the limestone powder in tremie pipe or even in boiler can be caused to be back in storage bin.

Utility model content

The purpose of this utility model is to provide a kind of lime stone transport device, by the way that blanking extension pipe is arranged and connects on it Logical blower has achieved the effect that reduce limestone powder reflux.

The above-mentioned technical purpose of the utility model technical scheme is that：

A kind of lime stone transport device includes the tremie pipe for being connected to boiler and storage bin, the lower section of the tremie pipe It is communicated with blanking extension pipe, blower is communicated on the tremie pipe, the blower is connected with air blast air pump；The tremie pipe It is equipped with blanking and opens and closes valve.

Using above-mentioned technical proposal, when use, first opens air blast air pump, then opens blanking and opens and closes valve, makes limestone powder It is entered in boiler along tremie pipe and blanking extension pipe under the action of the forces of the wind, the wind-force that air blast air pump provides is superimposed lime stone The gravity of powder itself can reduce the case where limestone powder returns storage bin by the pressure back-pressure in boiler.Furthermore blanking adds Long tube extends the distance that lime stone enters boiler so that limestone powder has enough distances into row buffering, from lime stone The case where powder is blown back storage bin at once under boiler pressure effect.

Further preferably：The blanking extension pipe includes the curvilinear conduit being connected on tremie pipe.

Using above-mentioned technical proposal, curvilinear conduit can further extend limestone powder drop, provide abundance Buffer time, and air blast air pump provide air-flow the forming curves shape after curvilinear conduit air-flow so that air-flow is more It is powerful.Secondly, the inner wall of curvilinear conduit can be blocked in the air-flow that storage bin is flowed under boiler pressure effect, reduce agstone The case where storage bin is returned in end by blowback.

Further preferably：The blanking extension pipe further includes the feed pipe being communicated on the curvilinear conduit, it is described into Expects pipe is vertically arranged.

Using above-mentioned technical proposal, when limestone powder enters vertical feed pipe, energy after the buffering of curvilinear conduit Enough make limestone powder that gravity be made full use of to fall in boiler, accelerates the charging of limestone powder.Furthermore vertical feed pipe will The oblique movement of limestone powder from curvilinear conduit out is converted to vertical movement, accelerates the speed that limestone powder falls Degree.Meanwhile the vertical convenient connection with boiler of feed pipe.

Further preferably：The blanking opens and closes the top that valve is set to the blower.

Using above-mentioned technical proposal, when needing to stop inputting limestone powder into boiler, first closes blanking and open and close valve Air blast air pump is turned off, is avoided when closing air blast air pump, the limestone powder in boiler recoils the case where entering storage bin.

Further preferably：The feed pipe is equipped with charging and opens and closes valve.

Using above-mentioned technical proposal, when stopping input limestone powder, first closes blanking and open and close valve, turn off charging and open and close Valve finally closes air blast air pump, reduces blanking and opens and closes valve and feed the limestone powder opened and closed between valve, improves limestone powder Utilization.Furthermore the barrier that blanking opens and closes valve and charging opens and closes valve twice valve is set, and the air pressure in reduction boiler is rushed when excessive Enter the probability of storage bin.

Further preferably：Pressure sensing for measuring the tremie pipe internal pressure is installed on the tremie pipe Device is powered with display screen on the pressure transducer.

Using above-mentioned technical proposal, band is useful for measuring the detection dress of boiler internal pressure on boiler in the prior art It sets, to ensure that the pressure of boiler internal is no more than operating limit；Pressure transducer is set on tremie pipe, it can be from display screen Read the pressure in tremie pipe.When the pressure in tremie pipe is less than the pressure that the detection device on boiler measures, air blast is adjusted The blast intensity of air pump improves the pressure in tremie pipe, reduces the situation that limestone powder is blown back in storage bin.

Further preferably：The blanking extension pipe and the tremie pipe flanged joint, it is close on the blanking extension pipe The position of bottom is equipped with flange ring.

Using above-mentioned technical proposal, flanged joint has excellent leakproofness and bonding strength, blanking can facilitated to add In the case of the detachable maintaining of long tube, achieve the effect that be completely embedded between tremie pipe and blanking extension pipe.Blanking extension pipe exists Connection Step on boiler is that first the bottom of blanking extension pipe is inserted into boiler, then is connected with by flange ring, under reducing The case where gas in material extension pipe and boiler is overflowed from the junction of blanking extension pipe and boiler.

Further preferably：Having heaters is set on the blower.

Using above-mentioned technical proposal, the heat that burning generates in boiler is set on blower needed for progress thermal power generation Limestone powder can be preheated by setting heater, reduce the thermal loss in boiler.

Further preferably：Insulation construction is equipped on the tremie pipe and blanking extension pipe, the insulation construction includes From-inner-to-outer is sequentially arranged in the tremie pipe and heat-preservation cotton layer, cavity insulating layer and outside protection in blanking lengthening pipe outer wall Layer.

Using above-mentioned technical proposal, after on the inner wall of the heat transfer in boiler to tremie pipe and blanking extension pipe, Insulation cotton layer absorbs, since air is the non-conductor of heat so that heat is stored in heat-preservation cotton layer；Outside protective layer energy Enough influences reduced inside extraneous tremie pipe and blanking extension pipe.

In conclusion the utility model has the advantages that：By the way that blanking extension pipe and blower is arranged, reach Reduce the effect for the case where limestone powder is by the meeting of the pressure storage bin of the pressure in boiler.

Description of the drawings

Fig. 1 is the overall structure diagram of embodiment；

Fig. 2 is the partial structural diagram of embodiment, basically illustrates insulation construction.

In figure, 1, storage bin；2, boiler；3, tremie pipe；31, blanking opens and closes valve；4, blanking extension pipe；41, curvilinear conduit； 42, feed pipe；421, charging opens and closes valve；5, air-supply assembly；51, blower；511, heater；52, air blast air pump；6, heat preservation knot Structure；61, heat-preservation cotton layer；62, cavity insulating layer；63, outside protective layer；7, flange ring；8, pressure transducer；81, display screen.

Specific implementation mode

The utility model is described in further detail below in conjunction with attached drawing.

Embodiment：A kind of lime stone transport device, as shown in Figure 1, including the tremie pipe 3 being vertically arranged, tremie pipe 3 is connected to Between storage bin 1 and boiler 2 setting up and down.Tremie pipe 3 is equipped with blanking and opens and closes valve 31, is opened and closed in use, opening blanking Valve 31, limestone powder is entered from storage bin 1 in boiler 2 under the effect of gravity to burn.

In order to reduce limestone powder in dropping process by the air pressure refunds in boiler 2 the case where, the lower section of tremie pipe 3 It is communicated with the blanking extension pipe 4 being vertically arranged, the bottom of blanking extension pipe 4 is communicated in 2 top of boiler.Blanking extension pipe 4 wraps The curvilinear conduit 41 being integrally arranged and feed pipe 42 are included, curvilinear conduit 41 is located at the top of feed pipe 42, and on feed pipe 42 Valve 421 is opened and closed equipped with charging.Wherein, curvilinear conduit 41 can be waveform or spiral pipe, and the present embodiment is with wave It is illustrated for the curvilinear conduit 41 of shape.

In order to offset active force of the air pressure in boiler 2 to limestone powder, while reaching and accelerating limestone powder entrance The speed of boiler 2 has additional air-supply assembly 5 on tremie pipe 3.Air-supply assembly 5 includes the blower 51 being communicated on tremie pipe 3, Blower 51 is set to the lower section that blanking opens and closes valve 31.Air blast air pump 52 is connected on blower 51, and under being located on blower 51 Having heaters 511 is added in position between expects pipe 3 and air blast air pump 52, is preheated to limestone powder to reach and reduces pot The effect of thermal loss in stove 2.

Meanwhile as shown in Fig. 2, the outer wall of tremie pipe 3 and blanking extension pipe 4 be equipped with insulation construction 6, insulation construction 6 with 511 collective effect of heater reduces the thermal losses in boiler 2.Insulation construction 6 includes the heat-preservation cotton that from-inner-to-outer is set gradually Layer 61 and outside protective layer 63, are formed with cavity insulating layer 62 between heat-preservation cotton layer 61 and outside insulating layer, wherein heat preservation face layer It is adhered on the outer wall of tremie pipe 3 and blanking extension pipe 4.

In order to improve the efficiency that limestone powder enters boiler 2, the case where it is by blowback is reduced, is equipped on tremie pipe 3 Pressure transducer 8, pressure transducer 8 are electrically connected on display screen 81, for measuring the air pressure level inside tremie pipe 3.And will under The air pressure level comparison that the detection device on air pressure level and boiler 2 inside expects pipe 3 measures is adjusted when the former is less than the latter The wind speed of air blast air pump 52 is saved to improve the air pressure level in tremie pipe 3.

As shown in Fig. 2, the dismounting and repair of blanking extension pipe 4 for convenience, flange between curvilinear conduit 41 and tremie pipe 3 Connection；42 outer wall of feed pipe is equipped with flange ring 7, and flange ring 7 and feed pipe 42 are integrally arranged, and flange ring 7 and feed pipe 42 bottom end has certain distance.When blanking extension pipe 4 is connected on boiler 2, boiler 2 is first inserted into the bottom of feed pipe 42 It is interior, it then utilizes flange ring 7 to fix the position of feed pipe 42 and boiler 2, reaches the gas reduced in boiler 2 and in feed pipe 42 The case where being overflowed between feed pipe 42 and boiler 2.

The utility model use process is as follows, first open air blast air pump 52, be then turned on blanking and open and close valve 31 and charging Open and close valve 421 so that under limestone powder acts on while its own gravity and wind-force in transport to boiler 2.When needing to stop When transport lime stone powder, first closes blanking and open and close valve 31, wait for peacefully the stone made for a period of time in tremie pipe 3 and blanking extension pipe 4 Lime stone powder enters boiler 2, is then shut off charging and opens and closes valve 421, finally closes air blast air pump 52.

This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability Field technique personnel can as needed make the present embodiment the modification of not creative contribution after reading this specification, but As long as within the protection scope of the present utility model all protected by Patent Law.

Claims (9)

1. a kind of lime stone transport device, including it is used to be connected to the tremie pipe (3) of boiler (2) and storage bin (1), feature exists In being communicated with blanking extension pipe (4) below the tremie pipe (3), blower (51), institute be communicated on the tremie pipe (3) It states blower (51) and is connected with air blast air pump (52)；The tremie pipe (3) is equipped with blanking and opens and closes valve (31).

2. a kind of lime stone transport device according to claim 1, which is characterized in that the blanking extension pipe (4) includes The curvilinear conduit (41) being connected on tremie pipe (3).

3. a kind of lime stone transport device according to claim 2, which is characterized in that the blanking extension pipe (4) is also wrapped The feed pipe (42) being communicated in below the curvilinear conduit (41) is included, the feed pipe (42) is vertically arranged.

4. a kind of lime stone transport device according to claim 1, which is characterized in that the blanking opens and closes valve (31) and is set to The top of the blower (51).

5. a kind of lime stone transport device according to claim 3, which is characterized in that the feed pipe (42) be equipped with into Material opens and closes valve (421).

6. a kind of lime stone transport device according to claim 1, which is characterized in that be equipped on the tremie pipe (3) Pressure transducer (8) for measuring the tremie pipe (3) internal pressure is powered with display screen on the pressure transducer (8) (81)。

7. a kind of lime stone transport device according to claim 1, which is characterized in that the blanking extension pipe (4) and institute It states tremie pipe (3) flanged joint, flange ring (7) is equipped with close to the position of bottom on the blanking extension pipe (4).

8. a kind of lime stone transport device according to claim 1, which is characterized in that be provided on the blower (51) Heater (511).

9. a kind of lime stone transport device according to claim 1, which is characterized in that the tremie pipe (3) and blanking add Be equipped with insulation construction (6) on long tube (4), the insulation construction (6) include from-inner-to-outer be sequentially arranged in the tremie pipe (3) and Heat-preservation cotton layer (61), cavity insulating layer (62) on blanking extension pipe (4) outer wall and outside protective layer (63).