CN213689548U

CN213689548U - Device for rapidly determining harmful nitrogen content in denitration fly ash

Info

Publication number: CN213689548U
Application number: CN202022586015.4U
Authority: CN
Inventors: 袁继航; 罗获; 邓娅; 罗旭; 黄靖翔
Original assignee: Sichuan Tiezheng Engineering Testing Co ltd
Current assignee: Sichuan Tiezheng Engineering Testing Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-07-13
Anticipated expiration: 2030-11-10

Abstract

The utility model relates to a device of harmful nitrogen content of spot test denitration fly ash, the on-line screen storage device comprises a base, be provided with the support frame on the base, one side of support frame is provided with reaction vessel, the top that lies in reaction vessel on the support frame is provided with the liquid feeding funnel, liquid feeding funnel and reaction vessel intercommunication, the opposite side of support frame is provided with the survey device that is used for surveing ammonia content, be provided with the fixed block on the base, the bracing piece is kept away from and is provided with the installation pole on the tip of fixed block, the mounting hole has all been seted up at the both ends of installation pole, the last intercommunication of reaction vessel is provided with the connecting pipe, in the connecting pipe fixed connection mounting hole, the intercommunication is provided with the feed liquor pipe on the liquid feeding funnel, be provided with the sealing plug on the feed liquor pipe, be. This application has the effect of being convenient for improve experimental detection efficiency.

Description

Device for rapidly determining harmful nitrogen content in denitration fly ash

Technical Field

The application relates to the field of fly ash detection, in particular to a device for rapidly determining harmful nitrogen content in denitration fly ash.

Background

The fly ash is the main solid waste of coal-fired power plants, and can be widely applied to the production of various cements and concretes as a mineral admixture due to the potential hydration activity and the micro-aggregate filling effect of the fly ash. According to the requirements of national energy conservation and emission reduction and environmental protection policies, coal-fired power plants all over the country gradually and comprehensively implement the technical improvement of desulfurization and denitrification, thereby reducing the emission of various harmful gases generated by coal burning. However, the fly ash desulfurized by adopting the process can leave a residual part of ammonia, and if the fly ash containing ammonia is used for producing concrete, the fly ash is easy to explode when being used in a closed structure, so that the personal safety is threatened, and meanwhile, the quality problem of the concrete can be caused.

The traditional Chinese patent with the publication number of CN211263073U discloses a device for rapidly measuring the content of harmful nitrogen in denitration fly ash, which is characterized by comprising a closed reaction system, a recovery system and a constant-pressure volume metering system; outlets of the closed reaction system and the recovery system are respectively communicated with the constant-pressure volume metering system; the closed reaction system is used for reacting the denitration fly ash with a strong alkali solution to obtain ammonia gas; the recovery system is used for recovering the ammonia gas; the constant-pressure volume metering system is used for measuring a first volume before the ammonia gas is recovered and a second volume after the ammonia gas is recovered after the reaction is finished under the standard atmospheric pressure; the difference between the first volume and the second volume is multiplied by 0.624 to obtain the harmful nitrogen content.

In view of the above-mentioned related technologies, the inventor believes that when the device is used, a plurality of tests are required to determine the nitrogen content in the fly ash, but before and after each test, testers are required to install and dismantle a closed reaction system, so that the fly ash and treatment reactants are added, the interval time between tests is long, and the detection efficiency of the test is affected.

SUMMERY OF THE UTILITY MODEL

In order to facilitate the detection efficiency who improves the experiment, this application provides a device of the harmful nitrogen content of spot test denitration fly ash.

The application provides a device for rapid survey denitration fly ash harmful nitrogen content adopts following technical scheme:

a device for rapidly determining the content of harmful nitrogen in denitration fly ash comprises a base, wherein a support frame is arranged on the base, a reaction container is arranged on one side of the support frame, a liquid adding funnel is arranged on the support frame and above the reaction container, the liquid adding funnel is communicated with the reaction container, a determination device for determining the content of ammonia gas is arranged on the other side of the support frame, a fixed block is arranged on the base, a support rod is arranged on the fixed block along the vertical direction, an installation rod is arranged on the end part of the support rod, which is far away from the fixed block, the end part of the support rod is arranged in the central position of the installation rod, installation holes are formed in the two ends of the installation rod, a connecting pipe is communicated with the reaction container, a liquid inlet pipe is communicated with the connection hole, a liquid inlet pipe is communicated with the liquid inlet, the utility model discloses a telescopic liquid feeding device, including feed liquor pipe, connecting pipe, sealing plug, motor, drive end and fixed block fixed connection, the last sealing plug that is provided with of feed liquor pipe, when feed liquor pipe inserted to the connecting pipe, connecting pipe and sealing plug butt, be provided with the motor on the base, the drive end and the fixed block fixed connection of motor, the bracing piece sets up to scalable structure, be provided with the drive arrangement who is used for driving the bracing piece to stretch out.

By adopting the technical scheme, when the device is used for detecting the content of ammonia in the fly ash, a tester firstly adds the fly ash into a reaction container, installs the reaction container into one installation hole on an installation rod, then starts a driving device to extend a supporting rod, so that the installation rod drives a connecting pipe and the reaction container to move upwards until the connecting pipe is abutted against a sealing plug, then the tester adds a strong base solution into the reaction container through a liquid adding funnel, so that the ammonia sulfide in the fly ash reacts with the strong base solution to generate ammonia gas, the generated ammonia gas enters a measuring device to be measured, the measured value can be calculated to obtain the content of harmful nitrogen in the fly ash, in the test process, the tester can install another reaction container containing the fly ash into another installation hole, after the group of fly ash is tested, the staff alright make installation pole move down with start-up drive arrangement for the connecting pipe is shifted out to the feed liquor pipe, then starter motor, the motor drives the fixed block and rotates, the fixed block drives the bracing piece and the rotation of installation pole, make the installation pole drive another reaction vessel rotate to the below of feed liquor pipe, repeat step afterwards test can, and at this moment experimenter alright handle experimental fly ash, and pack into new fly ash and prepare next test, so just make the interval time between the test twice shorter, the detection efficiency of test has been improved.

Optionally, the bracing piece includes the carriage release lever of pegging graft in the fixed tube with fixed block fixed connection's fixed tube and slip, the tip and the installation pole fixed connection of fixed tube are kept away from to the carriage release lever, drive arrangement is including setting up the electric jar on the fixed block, the vertical up of drive end of electric jar, just the drive end and the carriage release lever fixed connection of electric jar.

Through adopting above-mentioned technical scheme, start the electric jar, electric jar drive carriage release lever stretches out or the immigration fixed pipe for the bracing piece extension or shorten, thereby drive installation pole up or move down, make the feed liquor pipe get into or shift out the connecting pipe, utilize the electric jar to realize the flexible of bracing piece, and the simple structure of electric jar, the tester of being more convenient for uses.

Optionally, a mounting groove is formed in the inner wall of the mounting hole, the mounting groove extends along the length direction of the mounting hole, the two ends of the mounting groove are communicated with the inner wall of the mounting hole, a clamping groove is formed in one side, located on the inner wall of the mounting hole, of the mounting groove, the clamping groove is parallel to the mounting groove, the inner wall of the mounting hole is communicated with one end, far away from the base, of the clamping groove, the width of the clamping groove is the same as that of the mounting groove, a clamping block is arranged on the connecting pipe, and the size of the clamping block is matched with that of the clamping groove.

Through adopting above-mentioned technical scheme, when fixing reaction vessel to the installation pole, the testing personnel at first penetrates the mounting hole with the connecting pipe from the below of mounting hole, and make the joint piece on the connecting pipe get into in the mounting groove, move reaction vessel up afterwards, make the connecting pipe pass the mounting hole, make the joint piece wear out from the other end of mounting groove simultaneously, testing personnel rotates the connecting pipe again afterwards, make the joint piece remove to the position of joint groove, and make the joint piece get into the joint inslot, thereby make in the connecting pipe is fixed to the mounting hole, make reaction vessel fixed with the installation pole, and when pulling down reaction vessel, then reverse carry on above-mentioned operation can, thereby reaction vessel's fast loading and unloading has been realized, it is comparatively convenient.

Optionally, an adjusting hole is formed in the center of the mounting rod, the supporting rod penetrates through the adjusting hole, a tightening bolt is arranged on the mounting rod, and the tightening bolt penetrates through the side wall of the mounting rod and is tightened to the supporting rod.

Through adopting above-mentioned technical scheme, when using, testing personnel can adjust the position of installation pole on the bracing piece according to actual conditions, ensure that the connecting pipe can tightly support on the sealing plug, after the adjustment through support the bolt fix can.

Optionally, the surfaces of the supporting rod and the mounting rod are coated with anticorrosive coatings.

Through adopting above-mentioned technical scheme, the setting up of anticorrosive coating can reduce the circumstances that takes place bracing piece and installation pole and be corroded by reaction solution, has increased the life of bracing piece and installation pole.

Optionally, a rubber ring is arranged on the end of the connecting pipe far away from the reaction vessel.

Through adopting above-mentioned technical scheme, the leakproofness between connecting pipe and the sealing plug can be increased in the setting of rubber ring, has reduced the condition that the ammonia was revealed from the connecting pipe of taking place.

Optionally, a sealing groove is formed in the sealing plug, and the end part, far away from the reaction vessel, of the connecting pipe is inserted into the sealing groove.

By adopting the technical scheme, the connecting pipe enters the sealing groove, the sealing performance between the connecting pipe and the sealing plug can be further increased, and the reaction container is ensured to be in a closed environment.

Optionally, the motor is a stepping motor.

Through adopting above-mentioned technical scheme, set up the motor into step motor for the turned angle of installation pole can control more accurately, thereby makes connecting pipe and feed liquor pipe can aim at better.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the reaction container is replaced by arranging the fixing block on the base, arranging the supporting rod on the fixing block, arranging the mounting rod on the supporting rod, arranging the mounting hole on the mounting rod for fixing the reaction container, arranging the supporting rod into a telescopic structure, and driving the mounting rod to rotate and lift by using the motor and the driving device respectively, so that the interval time between two tests is reduced, and the detection efficiency of the tests is improved;

2. the inner wall of the mounting hole is respectively provided with the mounting groove and the clamping groove, the connecting pipe is provided with the clamping block, the mounting groove enables the connecting pipe and the clamping block to pass through the mounting hole, and the clamping groove enables the clamping block to be fixed in the mounting hole, so that the reaction container can be fixed with the mounting rod, and the reaction container is simple in overall structure and convenient to assemble and disassemble;

3. through set up the rubber ring on the connecting pipe, set up the seal groove on the sealing plug, increased the leakproofness between connecting pipe and the sealing plug, reduced the condition that takes place the ammonia and reveal, guaranteed the accuracy nature of test result.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is an enlarged partial schematic view of portion A of FIG. 1;

FIG. 3 is a schematic diagram of a partial exploded structure of the reaction vessel and the installation rod of FIG. 1 after explosion according to an embodiment of the present application;

fig. 4 is a partial sectional structure schematic diagram of the sealing plug in fig. 1 according to the embodiment of the present application.

Description of reference numerals: 1. a base; 2. a support frame; 21. a reaction vessel; 211. a connecting pipe; 2111. a rubber ring; 212. a clamping block; 22. a liquid adding funnel; 221. a liquid inlet pipe; 222. a sealing plug; 2221. a sealing groove; 23. a measuring device; 3. a fixed block; 31. a support bar; 311. a fixed tube; 312. a travel bar; 32. an electric cylinder; 4. mounting a rod; 41. mounting holes; 411. mounting grooves; 412. a clamping groove; 5. a motor; 42. an adjustment hole; 43. the bolt is pressed tightly.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses device of rapid determination denitration fly ash harmful nitrogen content.

Referring to fig. 1, a device for rapidly determining the content of harmful nitrogen in denitration fly ash comprises a base 1, a support frame 2 is arranged on the base 1, a reaction vessel 21 is arranged on one side of the support frame 2, the reaction vessel 21 is a rubber ball, a liquid adding funnel 22 is arranged on the support frame 2 and above the reaction vessel 21, a connecting pipe 211 is fixedly connected to the reaction vessel 21, a liquid inlet pipe 221 is integrally formed on the liquid adding funnel 22, the diameter of the liquid inlet pipe 221 is smaller than that of the connecting pipe 211, a sealing plug 222 is sleeved and fixedly connected to the liquid inlet pipe 221, when the liquid inlet pipe 221 is inserted into the connecting pipe 211, the connecting pipe 211 is abutted against the sealing plug 222, a determination device 23 for determining the content of ammonia is arranged on the other side of the support frame 2, the determination device 23 comprises a gas pipe communicated with the liquid inlet pipe 221, a glass guide cylinder is arranged at the other end of the gas pipe in a, the jack is connected with the piston through a spring.

After the fly ash is added into the reaction container 21, the liquid inlet pipe 221 is inserted into the connecting pipe 211, the connecting pipe 211 is tightly abutted to the sealing plug 222, then, a strong alkali solution is added into the reaction container 21 through the liquid adding funnel 22, the reaction container 21 is heated through the water bath kettle, the strong alkali solution reacts with ammonium sulfate in the fly ash to produce ammonia, the ammonia can enter the glass guide cylinder through the gas pipe after moving out of the reaction container 21, so that the pressure in the glass guide cylinder is increased, the piston in the glass guide cylinder moves under the action of the pressure, the volume of the ammonia can be obtained by converting the moving distance of the piston, and therefore, the content of harmful nitrogen is calculated.

Referring to fig. 1 and 2, be provided with fixed block 3 on the base 1, fixedly connected with bracing piece 31 on the fixed block 3, bracing piece 31 extends along vertical direction, but the bracing piece 31 is established to extending structure, but install installation pole 4 on the tip that the fixed block 3 was kept away from to bracing piece 31, the tip of bracing piece 31 is located the central point of installation pole 4, in order to increase the life of bracing piece 31 and installation pole 4, all scribble at bracing piece 31 and installation pole 4 surface and be equipped with the anticorrosive coating, the anticorrosive coating chooses for use the teflon layer (not shown in the figure).

Referring to fig. 1 and 3, mounting holes 41 are formed in the mounting rod 4 at both ends of the mounting rod 4, the mounting holes 41 are formed in the vertical direction and penetrate through the mounting rod 4, and the connecting pipe 211 of the reaction vessel 21 can be fixedly connected in the mounting holes 41; a motor 5 is arranged on the base 1, the driving end of the motor 5 is fixedly connected with the fixed block 3, and in order to better control the rotation angle of the motor 5, the motor 5 is a stepping motor 5; and the fixed block 3 is provided with a driving device which can drive the supporting rod 31 to extend and retract.

When the device is used, a tester loads one reaction container 21 filled with fly ash into one mounting hole 41 of the mounting rod 4, and drives the mounting rod 4 to move by using the driving device, so that the connecting pipe 211 of the reaction container 21 is communicated with the liquid inlet pipe 221, and a test is started, in the test process, the tester can load the other reaction container 21 filled with fly ash into the other mounting hole 41 of the mounting rod 4, after the test is finished, the tester can start the motor 5 to drive the fixing block 3 to rotate, so that the fixing block 3 drives the mounting rod 4 to rotate, and the other reaction container 21 is moved to the position of the liquid inlet pipe 221, and the next test is carried out after the connection, so that the interval time of two tests is reduced, and the test detection efficiency is improved.

Referring to fig. 1 and 2, the telescopic structure of the support rod 31 includes a fixed tube 311 and a movable rod 312, the fixed tube 311 is fixedly connected to the fixed block 3, the movable rod 312 is slidably inserted into the fixed tube 311, and an end of the movable rod 312 far away from the fixed tube 311 is fixedly connected to the mounting rod 4; the driving device comprises an electric cylinder 32 fixedly connected to the fixed block 3, the driving end of the electric cylinder 32 faces upwards vertically, and the driving end of the electric cylinder 32 is fixedly connected with the movable rod 312.

In the using process, the starting electric cylinder 32 drives the movable rod 312 to extend out of or move into the fixed pipe 311, so that the supporting rod 31 extends or shortens, the mounting rod 4 drives the reaction vessel 21 to move upwards or downwards, and the electric cylinder 32 is simple in structure and more convenient to use.

In other embodiments, the driving device may also adopt a pneumatic cylinder or a hydraulic cylinder.

Referring to fig. 3, mounting groove 411 has been seted up along the length direction of mounting hole 41 on the inner wall of mounting hole 41, the inner wall of mounting hole 41 is link up at the both ends of mounting groove 411, joint groove 412 has been seted up to the one side that lies in mounting groove 411 on the inner wall of mounting hole 41, joint groove 412 is parallel with mounting groove 411, the one end that base 1 was kept away from in joint groove 412 link up the inner wall of mounting hole 41, and the width in joint groove 412 is the same with the width of mounting groove 411, integrated into one piece has joint piece 212 on connecting pipe 211, the size and the joint groove 412 looks adaptation of joint piece 212.

When fixing reaction vessel 21 to installation pole 4, make connecting pipe 211 penetrate from the below of mounting hole 41, and make joint piece 212 on the connecting pipe 211 get into in the mounting groove 411, move reaction vessel 21 up afterwards, implement joint piece 212 and wear out from the other end of mounting groove 411, then rotate reaction vessel 21, make connecting pipe 211 drive joint piece 212 and rotate to the position of joint groove 412, make joint piece 212 get into in the joint groove 412, so alright fix connecting pipe 211 in mounting hole 41, thereby the position of fixed reaction vessel 21, it is very convenient.

In this embodiment, only one set of mounting slots 411 and clamping slots 412 is provided, and in other embodiments, two or three sets of mounting slots 411 and clamping slots 412 may be provided to improve the fixing effect of the reaction vessel 21.

Referring to fig. 1 and 2, an adjusting hole 42 is formed in the center of the mounting rod 4, the supporting rod 31 penetrates through the adjusting hole 42, a fastening bolt 43 is arranged on the mounting rod 4, and the fastening bolt 43 penetrates through the side wall of the mounting rod 4 and is fastened to the supporting rod 31; in the use, the testing personnel can unscrew and support the bolt 43, and the installation pole 4 alright remove on bracing piece 31 this moment for the position of installation pole 4 can be adjusted according to actual conditions, and after the adjustment, it can to reuse the position of supporting the bolt 43 fixed mounting pole 4.

Referring to fig. 1 and 4, in order to increase the sealing performance between the connection pipe 211 and the sealing plug 222, a rubber ring 2111 is disposed on the end of the connection pipe 211 away from the reaction vessel 21, and a sealing groove 2221 matched with the connection pipe 211 is disposed on the sealing plug 222, so that after the liquid inlet pipe 221 enters the connection pipe 211, the connection pipe 211 enters the sealing groove 2221, and thus, the leakage of ammonia gas can be more effectively reduced.

The implementation principle of the device for rapidly determining the content of harmful nitrogen in denitration fly ash in the embodiment of the application is as follows: when the device is used for detecting the content of ammonia in the fly ash, a tester firstly adds the fly ash into the reaction container 21, installs the reaction container 21 into one installation hole 41 on the installation rod 4, then starts the driving device, extends the supporting rod 31, enables the installation rod 4 to drive the connecting pipe 211 and the reaction container 21 to move upwards until the connecting pipe 211 is tightly abutted to the sealing plug 222, and then the tester adds a strong base solution into the reaction container 21 through the liquid adding funnel 22, so that the ammonia sulfide in the fly ash reacts with the strong base solution, generates ammonia gas, the generated ammonia gas enters the measuring device 23 for measuring, and the measured value can be calculated to obtain the content of harmful nitrogen in the fly ash.

In the test process, a tester can install another reaction container 21 filled with fly ash into another installation hole 41, after the group of fly ash tests are finished, the worker can start the electric cylinder 32 to enable the installation rod 4 to move downwards, so that the liquid inlet pipe 221 moves out of the connecting pipe 211, then the motor 5 is started, the motor 5 drives the fixed block 3 to rotate, the fixed block 3 drives the supporting rod 31 and the installation rod 4 to rotate, the installation rod 4 drives another reaction container 21 to rotate to the position below the liquid inlet pipe 221, and then the steps are repeated to perform the tests, at the moment, the tester can treat the tested fly ash and load new fly ash to prepare the next test, so that the interval time between two tests is short, and the test detection efficiency is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a device of harmful nitrogen content of spot test denitration fly ash, includes base (1), be provided with support frame (2) on base (1), one side of support frame (2) is provided with reaction vessel (21), the top that lies in reaction vessel (21) on support frame (2) is provided with liquid feeding funnel (22), liquid feeding funnel (22) and reaction vessel (21) intercommunication, the opposite side of support frame (2) is provided with survey device (23) that are used for surveing ammonia content, its characterized in that: the device is characterized in that a fixing block (3) is arranged on the base (1), a supporting rod (31) is arranged on the fixing block (3) along the vertical direction, an installation rod (4) is arranged on the end portion, far away from the fixing block (3), of the supporting rod (31), the end portion of the supporting rod (31) is located in the central position of the installation rod (4), installation holes (41) are formed in two ends of the installation rod (4), a connecting pipe (211) is communicated with the reaction container (21), the connecting pipe (211) is fixedly connected with the installation holes (41), a liquid inlet pipe (221) is communicated with the liquid adding funnel (22), the diameter of the liquid inlet pipe (221) is smaller than that of the connecting pipe (211), a sealing plug (222) is arranged on the liquid inlet pipe (221), and when the liquid inlet pipe (221) is inserted into the connecting pipe (211), the connecting pipe (211) is abutted to the sealing plug, be provided with motor (5) on base (1), the drive end and fixed block (3) fixed connection of motor (5), bracing piece (31) set up to extending structure, be provided with the drive arrangement who is used for driving bracing piece (31) to stretch out and draw back on fixed block (3).

2. The device for rapidly determining the harmful nitrogen content in the denitrated fly ash according to claim 1, which is characterized in that: bracing piece (31) include with fixed block (3) fixed connection's fixed pipe (311) and slide carriage release lever (312) of pegging graft in fixed pipe (311), the tip and installation pole (4) fixed connection of fixed pipe (311) are kept away from in carriage release lever (312), drive arrangement is including setting up electric jar (32) on fixed block (3), the drive end of electric jar (32) is vertical up, just the drive end and carriage release lever (312) fixed connection of electric jar (32).

3. The device for rapidly determining the harmful nitrogen content in the denitrated fly ash according to claim 1, which is characterized in that: mounting groove (411) have been seted up on the inner wall of mounting hole (41), mounting groove (411) extend along the length direction of mounting hole (41), the inner wall setting that mounting hole (41) were link up at the both ends of mounting groove (411), joint groove (412) have been seted up to one side that lies in mounting groove (411) on the inner wall of mounting hole (41), joint groove (412) are parallel with mounting groove (411), the inner wall setting that mounting hole (41) were link up to the one end that base (1) was kept away from in joint groove (412), just the width in joint groove (412) is the same with the width of mounting groove (411), be provided with joint piece (212) on connecting pipe (211), the size and the joint groove (412) looks adaptation of joint piece (212).

4. The device for rapidly determining the harmful nitrogen content in the denitrated fly ash according to claim 1, which is characterized in that: adjusting holes (42) are formed in the central position of the mounting rod (4), the supporting rod (31) penetrates through the adjusting holes (42), a tightening bolt (43) is arranged on the mounting rod (4), and the tightening bolt (43) penetrates through the side wall of the mounting rod (4) and is tightened to the supporting rod (31).

5. The device for rapidly determining the harmful nitrogen content in the denitrated fly ash according to claim 1, which is characterized in that: and the surfaces of the supporting rod (31) and the mounting rod (4) are coated with anticorrosive coatings.

6. The device for rapidly determining the harmful nitrogen content in the denitrated fly ash according to claim 1, which is characterized in that: a rubber ring (2111) is arranged on the end part of the connecting pipe (211) far away from the reaction vessel (21).

7. The device for rapidly determining the harmful nitrogen content in the denitrated fly ash according to claim 6, characterized in that: the sealing plug (222) is provided with a sealing groove (2221), and the end part of the connecting pipe (211) far away from the reaction vessel (21) is inserted into the sealing groove (2221).

8. The device for rapidly determining the harmful nitrogen content in the denitrated fly ash according to claim 1, which is characterized in that: the motor (5) is a stepping motor (5).