CN2837688Y

CN2837688Y - Compensation type wind pressure measuring and anti-blockage blowing device

Info

Publication number: CN2837688Y
Application number: CN 200520074921
Authority: CN
Inventors: 张振华
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-23
Filing date: 2005-08-23
Publication date: 2006-11-15
Anticipated expiration: 2015-08-23

Abstract

The utility model relates to a compensation type wind pressure measurement anti-clogging blowing device, which belongs to the anti-clogging blowing device used for a fluidized bed boiler. According to the design proposal provided by the utility model, an inner pipe is arranged in an outer pipe; an outlet of the inner pipe is positioned in the outer pipe; a pressure guide pipe is connected to the position on the outer pipe corresponding to the outlet of the inner pipe; the inlet end of the inner pipe extends out of the outer pipe, and the end of the outer pipe is provided with a clamp used for fixing and regulating the inner pipe. The utility model avoids the clogging phenomenon by a mode that a compensation device is directly arranged on a main body of a blowing sampler and increases the safety of the operation of the boiler.

Description

The anti-blocking blow device of compensation wind pressure measurement

Technical field

The utility model belongs to a kind of boiler accessories, specifically a kind of anti-blocking blow device that is used on the fluidized-bed combustion boiler.

Background technology

Along with the continuous enhancing of people to environmental protection consciousness, CFBB is widely used.The combustion mechanism of CFBB is: the fuel in the burner hearth utilizes powerful wind-force when burning, fuel is flowed, and burns fully, and therefore, the fluidisation situation in its burner hearth is an important operational factor.But, badly influence the authenticity of sampling because the fuel that flows very easily stops up sampling line.At present, the anti-blocking mode of sampling in the power industry adopts the anti-blocking blast sampler of conventional built-in anti-blocking mechanism mostly, or the blast anti-blocking blow device of taking a sample, these devices can produce certain effect in sampling aspect anti-blocking, but it is and not obvious, often still clogging can occur, can not carry out reliable continuous measurement for a long time, bring certain influence for the safe operation of boiler.

Summary of the invention

The utility model purpose is to design the anti-blocking blow device of a kind of compensation wind pressure measurement, avoids clogging by compensation arrangement directly being installed on the mode that purges on the sampler body, improves the security of boiler operatiopn.

According to design provided by the utility model, interior pipe is arranged in outer tube, and the outlet of interior pipe is positioned at outer tube, the outlet position corresponding to interior pipe on outer tube connects pressure guiding pipe, the entrance point of interior pipe stretches out outer tube, and this end of outer tube install be used for fixing and adjust in the clamper of pipe.

Entrance point at interior pipe utilizes pipeline to connect the gas outlet, and the other end of gas outlet utilizes pipeline to be connected with the outlet of flowmeter, and the import of flowmeter utilizes pipeline to be connected with pressure reducer, and the import of pressure reducer utilizes pipeline to be connected with air inlet.At the other end of pressure guiding pipe flexible joint and impulse outlet are installed, and the end of pressure guiding pipe is fixed in the impulse outlet by flexible joint, the impulse outlet utilizes pipeline and bypass purging mouth to be connected, bypass purges mouth and utilizes pipeline to be connected with air inlet, and on the pipeline between bypass purging mouth and air inlet the bypass blow down valve is set.

On pressure reducer, utilize pipeline to connect Pressure gauge.Draw arm on the pipeline between impulse outlet and bypass purge mouthful, protective valve and transmitter be installed on arm, bypass purge mouthful and air inlet between pipeline on draw arm, installation and measuring switch and detection hole on this arm.

Characteristics of the present utility model are: compensation arrangement directly is installed on the body that purges sampler, that is: directly be installed on interior pipe in the outer tube, position corresponding to interior pipe outlet is provided with pressure guiding pipe on outer tube again, in compensation arrangement, form two pipelines, outer tube sleeve on inner pipe, become sealing between two pipes of import department, then at the import termination source purge gas of interior pipe, the other end is facing to blowing in the outer tube, outer tube has two outlets, outlet connects the detection hole in transmitter and the permanent air-flow control cabinet, and another outlet is blown facing to pipeline or burner hearth measuring point, in regulating during length of tube, can regulate the air quantity of two outlets on the outer tube simultaneously, or after interior pipe adjusted to certain-length, regulate the flowmeter of permanent air-flow control cabinet again, to adjust two outlet air quantity of outer tube.

Description of drawings

Fig. 1 is a structure chart of the present utility model.

The specific embodiment

As shown in the figure: pipe 7 in outer tube 8, having, and the outlet of interior pipe 7 is positioned at outer tube 8, connect pressure guiding pipe 9 corresponding to the outlet position of interior pipe 7 on outer tube 8, the entrance point of interior pipe 7 stretches out outer tube 8, and this end of outer tube 8 install be used for fixing and adjusts in manage 7 clamper.Entrance point 6 at interior pipe 7 utilizes pipeline to connect gas outlet 5, and the other end of gas outlet 5 utilizes pipeline to be connected with the outlet of flowmeter 4, and the import of flowmeter 4 utilizes pipeline to be connected with pressure reducer 3, and the import of pressure reducer 3 utilizes pipeline to be connected with air inlet 2.

At the other end of pressure guiding pipe 9 flexible joint 20 and impulse outlet 10 are installed, and the end of pressure guiding pipe 9 is fixed in impulse outlet 10 by flexible joint 20, impulse outlet 10 utilizes pipeline and bypass purging mouth 13 to be connected, bypass purges mouthfuls 13 and utilizes pipeline to be connected with air inlet 2, and on the pipeline of 2 of bypass purging mouth 13 and air inlets bypass blow down valve 14 is set.On pressure reducer 3, utilize pipeline to connect Pressure gauge 21.Purge in impulse outlet 10 and bypass on mouthfuls 13 the pipeline and draw arm, protective valve 11 and transmitter 12 are installed on arm, bypass purge mouthfuls 13 and the pipeline of 2 of air inlets on draw arm, installation and measuring switch 15 and detection hole 16 on this arm.

In clamper, the passage that pipe 7 in can holding is arranged in the sleeve 27, this passage is near the internal diameter of an end of the entrance point of interior pipe 7 internal diameter less than the other end, the middle part of this passage is one section changeover portion that diameter gradually changes, clamp 26 is arranged in this changeover portion, on sleeve 27, connect lock sleeve 25 near the bigger end of its passage internal diameter, the inner of this lock sleeve 25 is stretched in the passage of sleeve 27, the passage that pipe 7 in can holding is also arranged in the lock sleeve 25, and the horn mouth that expands outwardly is set in the passway of lock sleeve 25 the inners, on sleeve 27, be provided for air blowing import 6 is fixed on the adapter sleeve 19 of this end, the passage of pipe 7 in can holding is arranged in air blowing import 6 near the less end of its passage internal diameter.

All be installed in the permanent air-flow control cabinet 1 for ease of installation and the above-mentioned flowmeter 4 of use, pressure reducer 3, Pressure gauge 21, sense switch 15, detection hole 16 and bypass blow down valve 14 etc., on permanent air-flow control cabinet 1, be installed into gas port 2 and be respectively applied for the flexible joint 17,18 that connects gas outlet 5 and bypass purging mouth 13.

During work, source purge gas is modulated into the air-flow of a constant pressure and flow through pressure reducer 3 and flowmeter 4 by air inlet 2, its pressure is shown by Pressure gauge 21, flow is shown by flowmeter 4, this air-flow manages 7 by gas outlet 5 in connecting line to the import 6 of blowing enters, blow to outer tube 8 again, meanwhile pressure guiding pipe 9 is produced getter action.This moment, the air blowing to outer tube 8 can produce an additonal pressure △ p owing to be subjected to drag effect, and can produce a negative pressure △ p ' to the air-breathing of pressure guiding pipe 9, like this in pressure guiding pipe 9, because △ p and △ p ' cancel each other, make because the additonal pressure that the sweep gas miscarriage is given birth to is zero, thus impulse export the pressure at 10 places just equal in burner hearth or the pipeline by measuring pressure.

The length of pipe 7 can be adjusted the inspiratory flow of pressure guiding pipe 9 and the air blowing flow of outer tube 8 in regulating, and the negative pressure △ p ' of its generation is cancelled out each other with △ p get final product.

Under the certain situation of the length of interior pipe 7, regulate flowmeter 4 and also can adjust to the inspiratory flow of pressure guiding pipe 9 with to the air blowing flow of outer tube 8, the negative pressure △ p ' of its generation is cancelled out each other with malleation △ p get final product.

Before use, the length of pipe 7 in should accurately regulating, during adjusting, unclamp lock sleeve 25 earlier, make clamp 26 be in loosening state, at this moment pipe 7 moves in passage in just can making, when the correct position of the port of export of interior pipe 7 being adjusted to pressure guiding pipe 9, just tighten lock sleeve 25, make the horn mouth of lock sleeve 25 the inners be adjacent to clamp 26, and make the other end of clamp 26 press close to changeover portion in the sleeve 27, continue to tighten lock sleeve 25, make clamp 26 under the effect of the changeover portion of the horn mouth of lock sleeve 25 and sleeve 27 interior diameter gradual changes, pipe 7 is fixed interior pipe 7 in clamping tightly.

The measuring principle of this device is to utilize the method for ventilating in measuring point continuously, make measuring point anti-blocking, and utilize hydromechanical dynamic pressure compensation method, eliminate the differential pressure that produces because of the blowback air pressure, to guarantee real measured value, this is the maximum characteristics of the anti-blocking blow device of compensation wind pressure measurement.

All the other can outsourcing except compensation arrangement is made by oneself for the parts of this device.

Claims

1, the anti-blocking blow device of compensation wind pressure measurement, it is characterized in that: interior pipe (7) is arranged in outer tube (8), and the outlet of interior pipe (7) is positioned at outer tube (8), the outlet position of going up corresponding to interior pipe (7) at outer tube (8) connects pressure guiding pipe (9), in the entrance point of pipe (7) stretch out outer tube (8), and this end of outer tube (8) install be used for fixing and adjusts in manage the clamper of (7).

2, the anti-blocking blow device of compensation wind pressure measurement according to claim 1, it is characterized in that: the entrance point (6) in interior pipe (7) utilizes pipeline to connect gas outlet (5), the other end of gas outlet (5) utilizes pipeline to be connected with the outlet of flowmeter (4), the import of flowmeter (4) utilizes pipeline to be connected with pressure reducer (3), and the import of pressure reducer (3) utilizes pipeline to be connected with air inlet (2).

3, the anti-blocking blow device of compensation wind pressure measurement according to claim 1, it is characterized in that: flexible joint (20) and impulse outlet (10) are installed at the other end of pressure guiding pipe (9), and the end of pressure guiding pipe (9) is fixed in impulse outlet (10) by flexible joint (20), impulse outlet (10) utilizes pipeline and bypass purging mouthful (13) to be connected, bypass purges mouthful (13) and utilizes pipeline to be connected with air inlet (2), and on the pipeline between bypass purging mouthful (13) and air inlet (2) bypass blow down valve (14) is set.

4, the anti-blocking blow device of compensation wind pressure measurement according to claim 1 is characterized in that: utilize pipeline to connect Pressure gauge (21) on pressure reducer (3).

5, the anti-blocking blow device of compensation wind pressure measurement according to claim 3; it is characterized in that: on the pipeline between impulse outlet (10) and bypass purging mouthful (13), draw arm; protective valve (11) and transmitter (12) are installed on arm; on the pipeline between bypass purging mouthful (13) and air inlet (2), draw arm, installation and measuring switch (15) and detection hole (16) on this arm.

6, the anti-blocking blow device of compensation wind pressure measurement according to claim 1, it is characterized in that: in clamper, sleeve has the passage that can hold interior pipe (7) in (27), this passage is near the internal diameter of an end of the entrance point of interior pipe (7) internal diameter less than the other end, the middle part of this passage is one section changeover portion that diameter gradually changes, clamp (26) is arranged in this changeover portion, go up near the bigger end connection lock sleeve (25) of its passage internal diameter at sleeve (27), the inner of this lock sleeve (25) is stretched in the passage of sleeve (27), lock sleeve also has the passage that can hold interior pipe (7) in (25), and in the inner passway of lock sleeve (25) horn mouth that expands outwardly is set.

7, the anti-blocking blow device of compensation wind pressure measurement according to claim 6, it is characterized in that: go up the adapter sleeve (19) that is provided for air blowing import (6) is fixed on this end near the less end of its passage internal diameter at sleeve (27), in air blowing import (6), the passage that can hold interior pipe (7) is arranged.

8, according to claim 2 or the anti-blocking blow device of 3 or 4 or 5 described compensation wind pressure measurements, it is characterized in that: flowmeter (4), pressure reducer (3), Pressure gauge (21), sense switch (15), detection hole (16) and bypass blow down valve (14) all are installed in the permanent air-flow control cabinet (1), be installed into gas port (2) and be respectively applied for flexible joint (17), (18) that connect gas outlet (5) and bypass purging mouthful (13) on permanent air-flow control cabinet (1).