CN210322490U

CN210322490U - Self-pumping smoke sampler

Info

Publication number: CN210322490U
Application number: CN201921214627.1U
Authority: CN
Inventors: 马行; 曲国锋
Original assignee: Dosypower Technology Co ltd
Current assignee: Dosypower Technology Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-04-14
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a from bleed flue gas sampler, the sample thief is located the flue gas system, flue gas processing system includes economizer, denitration treatment device, air heater, dust remover and draught fan, between economizer and the denitration treatment device, between denitration treatment device and the air heater, between air heater and the dust remover and between dust remover and the draught fan have connected gradually first flue, second flue, third flue and fourth flue, the atmospheric pressure intensity in first flue, second flue, third flue and the fourth flue steadilys decrease in proper order, flue gas sampler includes the sampling pipe, the sampling pipe includes the inlet end and gives vent to anger the end. The utility model provides a from bleed flue gas sampler, its pressure differential that utilizes thermal power factory flue gas system realizes from the sampling of bleeding, need not with the help of equipment such as extra pumps, has practiced thrift the energy, has reduced the sampling cost, has improved the reliability.

Description

Self-pumping smoke sampler

Technical Field

The utility model relates to a flue gas sampler technical field especially relates to a from exhaust flue gas sampler.

Background

The thermal power plant is a plant for producing electric energy by using coal, petroleum and natural gas as fuels, and the basic production process is as follows: the fuel is burnt in the boiler to heat water into steam, chemical energy of the fuel is converted into heat energy, the steam pressure pushes the steam turbine to rotate, the heat energy is converted into mechanical energy, and then the steam turbine drives the generator to rotate, and the mechanical energy is converted into electric energy.

When fuel in the boiler is burnt at high temperature, nitrogen-containing organic matters are oxidized to generate nitrogen oxides (NOx), and the atmosphere environment is seriously polluted. In order to meet the environmental requirements and reduce the content of nitrogen oxides (NOx) in the flue gas discharged from the boiler, denitration treatment is required. The selective catalyst reduction flue gas denitration technology (SCR) adopts a vertical catalyst reaction tower and anhydrous ammonia to remove nitrogen oxides (NOx) from flue gas of a coal-fired combustion device (boiler) and a coal-fired power plant. The denitrated flue gas is sampled and then is continuously analyzed and measured for the content of NOx by a flue gas automatic monitoring system (CEMS), and the method is used for automatic control and environmental monitoring of a denitration system.

Need take the flue gas out from flue relevant position during sampling, generally need adopt corresponding pump to take the flue gas out from the flue among the prior art, the structure is comparatively complicated, and the input cost is higher, thermal power factory all has flue gas system, flue gas system includes high temperature over heater, low temperature over heater, the economizer, denitration treatment device, air heater, the dust remover, the draught fan, desulfurization treatment device, chimney and flue, the flue gas flow direction is for flowing out from the furnace and passing through high temperature over heater in proper order, low temperature over heater, the economizer, denitration treatment device, air heater, the dust remover, the draught fan, desulfurization treatment device and chimney discharge to the atmosphere, the flue is connected between each equipment, can have certain pressure differential between the different flues, the better utilization has not been carried out to this among the prior art.

Therefore, in view of the above technical problems, there is a need to provide a self-extracting smoke sampler.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a from flue gas sampling ware of bleeding, its usable thermal power factory flue gas processing system's pressure differential realizes from the sampling of bleeding, need not with the help of equipment such as extra pumps, and the energy saving of being convenient for can reduce the cost of sampling simultaneously.

In order to achieve the above object, an embodiment of the present invention provides the following technical solutions:

a self-pumping flue gas sampler is positioned in a flue gas treatment system, the flue gas treatment system comprises an economizer, a denitration treatment device, an air preheater, a dust remover and an induced draft fan, a first flue, a second flue, a third flue and a fourth flue are sequentially connected between the economizer and the denitration treatment device, between the denitration treatment device and the air preheater, between the air preheater and the dust remover and between the dust remover and the induced draft fan, the air pressure intensity in the first flue, the second flue, the third flue and the fourth flue is sequentially reduced, the flue gas sampler comprises a sampling pipe, the sampling pipe comprises an air inlet end and an air outlet end, the air inlet end of the sampling pipe is fixedly connected on the second flue, the air outlet end of the sampling pipe is fixedly connected on the third flue, the second flue and the third flue are communicated through the sampling pipe, and an automatic flue gas monitoring system is fixedly connected on the sampling pipe, the automatic flue gas monitoring system comprises a detection probe, and the detection probe is positioned in the sampling pipe.

As a further improvement, the sampling pipe is connected with a gate valve, and the gate valve is arranged between the automatic flue gas monitoring system and the air inlet end of the automatic flue gas monitoring system.

The utility model has the advantages that: the utility model provides a from bleed flue gas sampling ware, its usable thermal power factory flue gas processing system's pressure differential realizes from the sampling of bleeding, need not with the help of equipment such as extra pumps, and the energy saving of being convenient for can reduce the cost of sampling simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a self-pumping flue gas sampler according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a self-pumping flue gas sampler according to an embodiment of the present invention.

In the figure: 1. the system comprises an economizer, 2 a denitration treatment device, 3 an air preheater, 4 a dust remover, 5 an induced draft fan, 01 a first flue, 02 a second flue, 03 a third flue, 04 a fourth flue, 7 a sampling pipe, 8 a gate valve and 9 an automatic flue gas monitoring system.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the various figures of the present invention, certain dimensions of structures or portions are exaggerated relative to other structures or portions for ease of illustration, and thus, are used only to illustrate the basic structure of the subject matter of the present invention.

Terms such as "left", "right", and the like, used herein to denote relative spatial positions, are used for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "to the right" of other elements or features would then be oriented "to the left" of the other elements or features. Thus, the exemplary term "right side" may encompass both left and right orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1, in an embodiment of the present invention, a self-pumping flue gas sampler is located in a flue gas treatment system, the flue gas treatment system includes an economizer 1, a denitration treatment device 2, an air preheater 3, a dust collector 4 and an induced draft fan 5, a first flue 01, a second flue 02, a third flue 03 and a fourth flue 04 are sequentially connected between the economizer 1 and the denitration treatment device 2, between the denitration treatment device 2 and the air preheater 3, between the air preheater 3 and the dust collector 4 and between the dust collector 4 and the induced draft fan 5, the air pressure intensities in the first flue 01, the second flue 02, the third flue 03 and the fourth flue 04 are sequentially decreased, the flue gas sampler includes a sampling pipe 7, the sampling pipe 7 includes an air inlet end and an air outlet end, the air inlet end of the sampling pipe 7 is fixedly connected to the second flue 02, the end of the sampling pipe 7 is fixedly connected to the air outlet flue 03, and the second flue 02 and the third flue 03 are communicated with each other through a sampling pipe 7, the sampling pipe 7 is fixedly connected with an automatic flue gas monitoring system 9, the automatic flue gas monitoring system 9 comprises a detection probe, and the detection probe is positioned in the sampling pipe 7.

Further, a gate valve 8 is connected to the sampling pipe 7, and the gate valve 8 is located between the automatic flue gas monitoring system 9 and the air inlet end.

Furthermore, the inner wall of the sampling pipe 7 is provided with a polishing layer, so that dust is not easy to adhere.

The working principle is as follows: because the air pressure intensity in the first flue 01, the second flue 02, the third flue 03 and the fourth flue 04 is decreased gradually, the pressure difference exists in the first flue 01, the second flue 02, the third flue 03 and the fourth flue 04, when the gas in one of the flues needs to be measured, the air inlet end of the sampling pipe 7 can be connected with the corresponding flue, and the air outlet end of the sampling pipe 7 is connected with the flue which is lower than the air pressure in the flue, as shown in fig. 1, in order to sample the gas between the denitration treatment device 2 and the air preheater 3, as shown in fig. 2, in order to sample the gas between the coal economizer 1 and the denitration treatment device 2, a person skilled in the art can select a proper connection mode according to the actual detection requirement.

According to the technical scheme provided by the utility model, the utility model discloses following beneficial effect has:

the utility model provides a from bleed flue gas sampling ware, its usable thermal power factory flue gas processing system's pressure differential realizes from the sampling of bleeding, need not with the help of equipment such as extra pumps, and the energy saving of being convenient for can reduce the cost of sampling simultaneously.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a from bleed flue gas sample thief, the sample thief is located flue gas processing system, flue gas processing system includes economizer (1), denitration treatment device (2), air heater (3), dust remover (4) and draught fan (5), be connected with first flue (01), second flue (02), third flue (03) and fourth flue (04) between economizer (1) and denitration treatment device (2), between denitration treatment device (2) and air heater (3), between air heater (3) and dust remover (4) and between dust remover (4) and draught fan (5) in proper order, the atmospheric pressure intensity in first flue (01), second flue (02), third flue (03) and fourth flue (04) diminishes gradually, its characterized in that, flue gas sample thief includes sampling tube (7), sampling pipe (7) are including the inlet end and give vent to anger the end, sampling pipe (7) inlet end fixed connection is on second flue (02), the outlet end fixed connection of sampling pipe (7) is on third flue (03), and communicates through sampling pipe (7) between second flue (02) and third flue (03), fixedly connected with flue gas automatic monitoring system (9) on sampling pipe (7), flue gas automatic monitoring system (9) are including test probe, test probe is located sampling pipe (7).

2. The self-bleeding flue gas sampler as claimed in claim 1, wherein the sampling pipe (7) is connected with a gate valve (8), and the gate valve (8) is located between the automatic flue gas monitoring system (9) and the inlet end.