CN213986360U - CEMS (continuous emission monitoring System) moisture meter gas circuit system for 1000MW (megawatt) secondary reheating unit - Google Patents

Abstract

The utility model discloses a CEMS hygrometer gas circuit system for a 1000MW secondary reheating unit, which comprises a hygrometer and a jet pump, wherein the jet pump is connected with one side of the external bottom end of the hygrometer, a three-way pipe is arranged at one side of the external part of a three-way valve, an oil filter pipe is sleeved and arranged at one side of the external part of a pressure release valve, an adsorption cavity is arranged at one side of the internal part of the oil filter pipe close to a drainage plate, and a dissolution cavity is arranged at the other side of the internal part of the oil filter pipe, the utility model prolongs the path of compressed air for the hygrometer by a labyrinth gas circuit formed by the drainage plate at the air inlet of the internal part of the oil filter pipe, and is matched with a through hole to enter the adsorption cavity, oil gas contained in the compressed air can be preliminarily adsorbed by activated carbon particles in the adsorption cavity, and the treated compressed air for the hygrometer is guided to an alcohol solution in the dissolution cavity by a guide pipe, thereby the inside oil gas of air with the compression has been realized fully thoroughly cleaing away.

Description

CEMS (continuous emission monitoring System) moisture meter gas circuit system for 1000MW (megawatt) secondary reheating unit

Technical Field

The utility model relates to a secondary reheat unit technical field specifically is CEMS hygrograph gas circuit system that 1000MW secondary reheat unit was used.

Background

The traditional CEMS system adopts an SMC-9021D system which is distributed by Seikmikaha (Beijing) instruments, wherein the model of a hygroscope is SMC-209C, and the system is widely applied in the market.

However, in practical use, intermittent oxygen amount is easy to rise, the oxygen amount rises to cause the oxygen folding value of the smoke pollutants to rise, so that the hour average value is higher, and when gas circuit inspection is carried out, the phenomenon that the outlet of a jet pump at the outlet of a hygrograph is blocked, so that compressed air flows back to a sample gas pipeline is found, so that the finding of the source of the pollutants in the jet pump and the protection are very important work, the stable operation of a CEMS system can be improved, and the workload of maintenance personnel can be effectively reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a CEMS hygrometer gas circuit system that 1000MW secondary reheat unit was used to solve and to provide among the above-mentioned background art because the export of hygrometer export jet pump blocks up, lead to making compressed air flow backwards to the problem of appearance gas pipeline.

In order to achieve the above object, the utility model provides a following technical scheme: CEMS hygrometer gas circuit system that 1000MW secondary reheat unit was used, including hygrograph, jet pump, relief valve, three-way valve and three-way pipe, the jet pump is connected the outside bottom one side of hygrograph, the relief valve is installed the outside top one side of jet pump, the three-way valve is installed the outside top middle part of hygrograph, the three-way pipe is installed the outside one side of three-way valve, the outside one side of relief valve is cup jointed and is installed oil strain mechanism, the outside opposite side of three-way valve is cup jointed and is installed purification mechanism, oil strain mechanism is used for adsorbing the filtering with the inside oil gas that contains of compressed air, purification mechanism is used for sieving the impurity that contains in the inside outside atmosphere of three-way valve gets into.

Further, the oil filtering mechanism includes oil filtering pipe, air inlet, drainage plate, absorption cavity, through-hole, dissolves cavity, honeycomb duct, delivery pipe and sealed gluey post, the oil filtering pipe cup joints and installs the outside one side of relief valve, the air inlet is seted up the inside one side of oil filtering pipe, drainage plate symmetry staggered installation is in air inlet inner wall both sides, it sets up to adsorb the cavity the oil filtering pipe is inside to be close to drainage plate one side, the through-hole runs through and sets up adsorb cavity outer wall both sides, it sets up to dissolve the cavity the inside opposite side of oil filtering pipe, the honeycomb duct is installed it is close to adsorb the cavity outer wall through-hole one side top.

Furthermore, activated carbon adsorption particles are placed in the adsorption cavity, alcohol solution is placed in the dissolution cavity, and the liquid level of the alcohol solution is higher than the plane of the bottom end of the flow guide pipe.

Further, the delivery pipe is connected between the middle part of the bottom end of the dissolving cavity and the middle part of the bottom end of the adsorption cavity, and the sealant column is embedded in the middle part of the bottom end of the adsorption cavity through threads.

Further, purification mechanism includes breather filter, filter disc, screening layer, movable sleeve, sealed chock and compression spring, breather filter cup joints and installs the outside one side of three-way valve, the filter disc cup joints and installs the outside one side of breather filter, screening layer embedding is installed the inside bottom of filter disc, movable sleeve movable mounting be in inside the breather filter, sealed chock joint is installed the movable sleeve top, compression spring cup joints and installs movable sleeve is outside.

Further, the jet pump with through heat preservation mechanism fixed connection between the hygrograph bottom middle part, heat preservation mechanism includes coupling hose, heat preservation gum cover, polyurethane composite insulation layer and design steel wire, coupling hose connects hygrograph bottom middle part with between the jet pump outer wall, heat preservation gum cover cup joints and installs coupling hose is outside, polyurethane composite insulation layer pastes and covers heat preservation gum cover inner wall, the even embedding of design steel wire is installed inside polyurethane composite insulation layer.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model is provided with the oil filtering mechanism, when the compressed air for the instrument needs to enter the jet pump through the pressure relief valve, the labyrinth air passage formed by the drainage plate at the air inlet inside the oil filter pipe prolongs the path of the compressed air for the instrument and enters the adsorption chamber by matching with the through hole, the active carbon particles in the adsorption chamber can preliminarily adsorb oil gas contained in the compressed air, the treated compressed air for the instrument is guided to the alcohol solution in the dissolving chamber through the guide pipe, oil gas contained in the alcohol solution can be absorbed for the second time, thereby realized the inside oil gas of compressed air abundant thorough cleaing away, solved oil gas and taken place to block up in hygrometer export jet pump export easily, lead to making compressed air flow backwards to three-way pipe department in the appearance gas pipeline, cause the unit to appear intermittent type nature oxygen content problem that rises.

Through being provided with purification mechanism, make the three-way valve to gain electricity when the hygronom sweeps, outside air need enter into the three-way valve when inside and when being discharged by the jet pump, under the effect of considering the hole in filter disc screening layer inside, can screen out the dust that contains in the atmosphere, and promote movable sleeve and sealed chock through atmospheric pressure and remove and open the inside gas circuit of filter of taking a breath, and after the use, it is closed again to the filter of taking a breath through compression spring, thereby solved the atmosphere and directly got into to the three-way valve inside, it causes the problem of jam to get into to the inside accumulation of hygronom and jet pump through the three-way valve again, reduced the unit probability of breaking down, the stability of unit operation has been guaranteed.

Through being provided with heat preservation mechanism, can carry out the gas circuit connection between hygrometer bottom and the jet pump through coupling hose, and under the effect of the inside polyurethane composite insulation layer of heat preservation gum cover, can keep warm coupling hose position department, and can support the design to coupling hose by the design steel wire, it is fixed by metal support to have solved coupling hose, because metal heat dissipation is fast, it is great to lead to the coupling hose temperature to drop, gaseous dewfall at the coupling hose inner wall easily, easily adsorb the dust that gets into by the entry, lead to the problem that cubic pollutant gets into the jet pump and blocks up the venthole.

Drawings

Fig. 1 is a schematic structural diagram of a gas circuit system in an embodiment of the present invention;

FIG. 2 is a schematic plan view of the gas path optimization in the embodiment of FIG. 1;

FIG. 3 is a schematic diagram of the internal structure of the oil filter pipe in the embodiment of FIG. 1;

FIG. 4 is a schematic view showing an internal structure of the ventilation filter in the embodiment of FIG. 1;

fig. 5 is a schematic structural diagram of the interior of the thermal insulation rubber sleeve in the embodiment of fig. 1.

Reference numerals: 1. a hygrometer; 2. a jet pump; 3. a pressure relief valve; 4. an oil filtering mechanism; 401. an oil filter pipe; 402. an air inlet; 403. a drainage plate; 404. an adsorption chamber; 405. a through hole; 406. a dissolution chamber; 407. a flow guide pipe; 408. a discharge pipe; 409. sealing the glue column; 5. a three-way valve; 6. a purification mechanism; 601. a ventilation filter; 602. a filter disc; 603. a screening layer; 604. an active cannula; 605. a sealing plug block; 606. a compression spring; 7. a three-way pipe; 8. a heat preservation mechanism; 801. a connecting hose; 802. a heat-insulating rubber sleeve; 803. a polyurethane composite heat-insulating layer; 804. and (5) shaping the steel wire.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely 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, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-5 together, wherein, the CEMS hygrometer gas circuit system for 1000MW double reheat unit includes hygrometer 1, jet pump 2, relief valve 3, three-way valve 5 and three-way pipe 7, jet pump 2 is connected in the outside bottom one side of hygrometer 1, relief valve 3 is installed in the outside top one side of jet pump 2, three-way valve 5 is installed in the middle part of the outside top of hygrometer 1, three-way pipe 7 is installed in the outside one side of three-way valve 5, the outside one side of relief valve 3 is cup jointed and is installed oil filtering mechanism 4, the outside opposite side of three-way valve 5 is cup jointed and is installed purification mechanism 6.

The oil filtering mechanism 4 comprises an oil filtering pipe 401, an air inlet 402, a flow guide plate 403, an adsorption chamber 404, a through hole 405, a dissolving chamber 406, a flow guide pipe 407, a discharge pipe 408 and a sealing rubber column 409, wherein the oil filtering pipe 401 is sleeved and mounted on one side outside a pressure release valve 3, the air inlet 402 is arranged on one side inside the oil filtering pipe 401, the flow guide plate 403 is symmetrically and alternately mounted on two sides of the inner wall of the air inlet 402, the adsorption chamber 404 is arranged on one side, close to the flow guide plate 403, inside the oil filtering pipe 401, of the adsorption chamber 401, the through hole 405 penetrates through two sides of the outer wall of the adsorption chamber 404, the dissolving chamber 406 is arranged on the other side inside the oil filtering pipe 401, the flow guide pipe 407 is mounted at the top end of one side, close to the through hole 405, activated carbon adsorption particles are placed inside the adsorption chamber 404, alcohol solution is placed inside the dissolving chamber 406, the liquid level of the alcohol solution is higher than the bottom end plane of the flow guide pipe 407, the discharge pipe 408 is connected between the middle of the bottom end of the dissolving chamber 406 and the middle of the adsorption chamber 404, the sealing rubber column 409 is embedded in the middle of the bottom end of the adsorption chamber 404 through threads, when compressed air for instruments needs to enter the jet pump 2 through the pressure release valve 3, a labyrinth air passage formed by the drainage plate 403 at the air inlet 402 inside the oil filtering pipe 401 is used for prolonging the path of the compressed air for instruments and matching with the through hole 405 to enter the adsorption chamber 404, oil gas contained in the compressed air can be preliminarily adsorbed by active carbon particles inside the adsorption chamber 404, the treated compressed air for instruments is guided to the alcohol solution inside the dissolution chamber 406 through the flow guide pipe 407 and can be secondarily absorbed, so that the oil gas inside the compressed air can be fully and thoroughly removed, the problem that the oil gas is easily blocked at the outlet of the jet pump 2 at the outlet of the hygronom 1 and causes the compressed air to flow backwards to the sample gas pipeline at the position of the three-way pipe 7 is solved, the problem that the intermittent oxygen amount of the unit is high is caused, and meanwhile, the sealing rubber column 409 is screwed out, so that the activated carbon dry particles and the alcohol solution in the adsorption chamber 404 and the dissolution chamber 406 can be discharged and replaced regularly.

The purification mechanism 6 comprises a ventilation filter 601, a filter disc 602, a screening layer 603, a movable sleeve 604, a sealing plug 605 and a compression spring 606, the ventilation filter 601 is sleeved on one side of the outside of the three-way valve 5, the filter disc 602 is sleeved on one side of the outside of the ventilation filter 601, the screening layer 603 is embedded and installed at the bottom end of the inside of the filter disc 602, the movable sleeve 604 is movably installed inside the ventilation filter 601, the sealing plug 605 is clamped and installed at the top end of the movable sleeve 604, the compression spring 606 is sleeved and installed outside the movable sleeve 604, when the three-way valve 5 is powered by purging the hygrometer 1, and outside air needs to enter the inside of the three-way valve 5 and is discharged by the jet pump 2, under the action of the aperture of 0.2um inside the screening layer 603 inside the filter disc 602, dust contained in the atmosphere can be screened, and the air passage inside the ventilation filter 601 is opened by pushing the movable sleeve 604 and the sealing plug 605 to move by air pressure, after the use is finished, the air exchange filter 601 is closed again through the compression spring 606, so that the problem that the atmosphere directly enters the three-way valve 5 and then enters the hygrograph 1 and the jet pump 2 through the three-way valve 5 to be accumulated and cause blockage is solved, the failure probability of the unit is reduced, and the stability of the unit operation is ensured.

The jet pump 2 is fixedly connected with the middle part of the bottom end of the hygrograph 1 through a heat preservation mechanism 8, the heat preservation mechanism 8 comprises a connecting hose 801, a heat preservation rubber sleeve 802, a polyurethane composite heat preservation layer 803 and a shaping steel wire 804, the connecting hose 801 is connected between the middle part of the bottom end of the hygrograph 1 and the outer wall of the jet pump 2, the heat preservation rubber sleeve 802 is sleeved and installed outside the connecting hose 801, the polyurethane composite heat preservation layer 803 is attached to the inner wall of the heat preservation rubber sleeve 802, the shaping steel wire 804 is evenly embedded and installed inside the polyurethane composite heat preservation layer 803, the air path connection can be carried out between the bottom end of the hygrograph 1 and the jet pump 2 through the connecting hose 801, the position of the connecting hose 801 can be preserved under the action of the polyurethane composite heat preservation layer 803 inside the heat preservation rubber sleeve 802, the connecting hose 801 can be supported and shaped through the shaping steel wire 804, and the problem that the connecting hose 801 is fixed by a metal bracket is solved, because the metal heat dissipation is fast, lead to coupling hose 801 temperature drop great, the gas is easy at the inner wall dewfall of coupling hose 801, easily adsorbs the dust that gets into from the entry, leads to the problem that cubic pollutant gets into jet pump 2 and blocks up the venthole.

To sum up, the utility model provides a CEMS hygrometer gas circuit system that 1000MW secondary reheat unit was used, at work, at first, when appearance compressed air need enter into jet pump 2 inside through relief valve 3, through the labyrinth gas circuit that oil filter pipe 401 inside air inlet 402 department drainage plate 403 formed, the route of appearance compressed air has been prolonged, and cooperate through-hole 405 to enter into inside absorption cavity 404, can carry out preliminary absorption with the oil gas that contains in the compressed air through the inside active carbon particle of absorption cavity 404, and guide the appearance compressed air after handling to dissolving in the inside alcohol solution of cavity 406 through honeycomb duct 407, can carry out the secondary absorption to its oil gas that contains, thereby realized the inside oil gas of compressed air abundant thorough cleaing away;

then, when the hygronom 1 is blown to enable the three-way valve 5 to be electrified, and external air needs to enter the three-way valve 5 and is discharged by the jet pump 2, dust contained in the atmosphere can be screened out under the action of the aperture of 0.2um in the screening layer 603 in the filter disc 602, the air path in the ventilation filter 601 is opened by pushing the movable sleeve 604 and the sealing plug block 605 to move through air pressure, and the ventilation filter 601 is closed again through the compression spring 606 after the use is finished, so that the problem that the atmosphere directly enters the three-way valve 5 and then enters the hygronom 1 and the jet pump 2 through the three-way valve 5 to be accumulated to cause blockage is solved, the failure probability of the unit is reduced, and the stability of the unit operation is ensured;

finally, can carry out the gas circuit connection between 1 bottom of hygrograph and jet pump 2 through coupling hose 801, and under the effect of the compound heat preservation layer 803 of polyurethane in heat preservation gum cover 802 inside, can keep warm to coupling hose 801 position department, and can support the design to coupling hose 801 by design steel wire 804, coupling hose 801 has been solved and has been fixed by metal support, because metal heat dissipation is fast, lead to coupling hose 801 temperature drop great, gaseous condensation at coupling hose 801 inner wall easily, easily adsorb the dust that gets into by the entry, lead to the problem that massive pollutant gets into jet pump 2 and blocks up the venthole.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A CEMS (continuous emission monitoring system) moisture meter gas circuit system for a 1.1000MW double reheating unit comprises a moisture meter (1), a jet pump (2), a pressure release valve (3), a three-way valve (5) and a three-way pipe (7), the jet pump (2) is connected with one side of the external bottom end of the hygrograph (1), the pressure relief valve (3) is arranged on one side of the external top end of the jet pump (2), the three-way valve (5) is arranged in the middle of the top end outside the hygronom (1), the three-way pipe (7) is arranged at one side of the outer part of the three-way valve (5), it is characterized in that an oil filtering mechanism (4) is sleeved and mounted on one side of the outer part of the pressure release valve (3), the other side of the outside of the three-way valve (5) is sleeved with a purification mechanism (6), the oil filtering mechanism (4) is used for absorbing and filtering oil gas contained in the compressed air, the purification mechanism (6) is used for screening out impurities contained in the external atmosphere entering the interior of the three-way valve (5).
2. 2. A CEMS (continuous emission monitoring System) moisture meter gas path system for a 1000MW double reheat unit, according to claim 1, wherein the oil filtering mechanism (4) comprises an oil filtering pipe (401), an air inlet (402), a flow guiding plate (403), an adsorption chamber (404), a through hole (405), a dissolving chamber (406), a flow guiding pipe (407), a discharge pipe (408) and a sealing rubber column (409), the oil filtering pipe (401) is sleeved on one side of the outside of the pressure relief valve (3), the air inlet (402) is arranged on one side of the inside of the oil filtering pipe (401), the flow guiding plate (403) is symmetrically and alternately arranged on two sides of the inner wall of the air inlet (402), the adsorption chamber (404) is arranged on one side of the inside of the oil filtering pipe (401) close to the flow guiding plate (403), the through hole (405) is arranged on two sides of the outer wall of the adsorption chamber (404) in a penetrating manner, and the dissolving chamber (406) is arranged on the other side of the inside of the oil filtering pipe (401), the draft tube (407) is installed at the top end of one side of the outer wall of the adsorption chamber (404) close to the through hole (405).
3. 3. The CEMS humidity gauge gas circuit system for the 1000MW double reheat unit as claimed in claim 2, wherein activated carbon adsorption particles are placed inside the adsorption chamber (404), an alcohol solution is placed inside the dissolution chamber (406), and the liquid level of the alcohol solution is higher than the bottom end plane of the draft tube (407).
4. 4. The CEMS humidity gauge gas circuit system for the 1000MW double reheat unit according to claim 2, wherein the exhaust pipe (408) is connected between the middle of the bottom end of the dissolution chamber (406) and the middle of the bottom end of the adsorption chamber (404), and the sealant column (409) is installed in the middle of the bottom end of the adsorption chamber (404) through thread embedding.
5. 5. The CEMS humidity gauge gas circuit system for the 1000MW double reheat unit according to claim 1, wherein the purification mechanism (6) comprises a ventilation filter (601), a filter disc (602), a screening layer (603), a movable sleeve (604), a sealing plug block (605) and a compression spring (606), the ventilation filter (601) is sleeved on one side of the outside of the three-way valve (5), the filter disc (602) is sleeved on one side of the outside of the ventilation filter (601), the screening layer (603) is embedded in the bottom end of the inside of the filter disc (602), the movable sleeve (604) is movably installed inside the ventilation filter (601), the sealing plug block (605) is installed at the top end of the movable sleeve (604) in a clamping manner, and the compression spring (606) is sleeved on the outside of the movable sleeve (604).
6. 6. The CEMS humidity meter air circuit system for the 1000MW double reheat unit according to claim 1, wherein the jet pump (2) is fixedly connected with the middle of the bottom end of the humidity meter (1) through a heat insulation mechanism (8), the heat insulation mechanism (8) comprises a connecting hose (801), a heat insulation rubber sleeve (802), a polyurethane composite heat insulation layer (803) and a shaping steel wire (804), the connecting hose (801) is connected between the middle of the bottom end of the humidity meter (1) and the outer wall of the jet pump (2), the heat insulation rubber sleeve (802) is sleeved and installed outside the connecting hose (801), the polyurethane composite heat insulation layer (803) is attached to the inner wall of the heat insulation rubber sleeve (802), and the shaping steel wire (804) is uniformly embedded and installed inside the polyurethane composite heat insulation layer (803).

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