CN110905632A

CN110905632A - Electric quantity emergency supply device in road construction process

Info

Publication number: CN110905632A
Application number: CN201911249768.1A
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-03-24

Abstract

The invention relates to the technical field of road construction, in particular to an electric quantity emergency supply device in a road construction process, which comprises a box body, wherein a diesel generator set is arranged in the box body, an exhaust pipe of the diesel generator set is communicated with a pipe shell, an oxidation type catalyst and a particle trap are arranged in the pipe shell, the particle trap is formed by sequentially sleeving and combining a filter body, a spiral heating pipe, a heat insulation inner pipe and an outer pipe from inside to outside, the filter body is provided with an air inlet channel and an air outlet channel which are arranged in a parallel and staggered mode, and the vertical sections of the air inlet channel and the air outlet channel are in. The beneficial effects are that: the invention has novel and compact structure, adopts the spiral heating pipe to annularly heat the particle catcher so as to achieve the purposes of effectively removing particles and realizing the quick regeneration of the particle catcher, has good coupling effect of the oxidation type catalytic converter and the particle catcher, and further enhances the thermal shock resistance and the structural strength of the filter body through the design of the triangular gas channel.

Description

Electric quantity emergency supply device in road construction process

Technical Field

The invention relates to the technical field of road construction, in particular to an electric quantity emergency supply device in a road construction process.

Background

The diesel generator can run in parallel and has long continuous power supply time due to large capacity, can also run independently, does not run in parallel with a regional power grid, is not influenced by power grid faults, and has high reliability. Particularly, under the condition that the common commercial power is not reliable in some areas, the diesel generator is used as a standby power supply, so that the emergency power supply can play a role, and some loads which are important at ordinary times can be used during power failure through reasonable optimization of a low-voltage system, so that the diesel generator is widely used in road construction.

The diesel generator has the advantages of high fuel economy, high power performance, high durability, high working reliability and the like, but the particulate emission is high, the emission is one of the main sources of particulate matters in the atmosphere, and along with the continuous and strict environmental protection, the restriction regulation of the particulate emission of the diesel generator in countries and regions of the world is stricter.

In the field of diesel generators, the most widely used particulate filter is a wall-flow honeycomb ceramic filter, and the basic principle is that the exhaust gas of a diesel engine is discharged through a passage with small holes on the ceramic wall, and carbon clusters of larger particles are trapped, so that the purpose of reducing the emission of the particles is achieved. However, carbon particles in the filter are continuously deposited to gradually block the channel, so that the exhaust back pressure of the engine is increased, and the engine is not smooth in exhaust and the operation condition is deteriorated. Measures must be taken to remove the accumulated carbon particles. Because the exhaust temperature is usually low in the running process of the diesel engine, and carbon particulate matters deposited on the filter can be ignited and removed only at 500-600 ℃, the carbon particulate matters deposited in the filter can be quickly and effectively removed, so that the filter can be regenerated and continuously used, and the technical difficulty of popularization and application of the diesel generator is achieved.

Disclosure of Invention

The present invention is directed to an emergency power supply device for road construction, which solves the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an urgent feeding mechanism of electric quantity in road construction process, includes the box, the box embeds there is diesel generating set, diesel generating set's blast pipe is linked together with the pipe casing, the pipe casing embeds there are oxidation type catalyst converter and particulate trap, the front end flange joint front end housing of pipe casing, and the rear end screw thread of pipe casing connects the rear end housing, the tail pipe is connected to the rear end housing screw thread, be equipped with first spacer ring and second spacer ring in the pipe casing, be equipped with first pressure spring and oxidation type catalyst converter between first spacer ring and the front end housing, be equipped with second pressure spring and particulate trap between second spacer ring and the rear end housing, the particulate trap is cup jointed the combination by filter body, spiral heating pipe, thermal-insulated inner tube and rear end housing from inside to outside in proper order, the filter body is equipped with parallel staggered arrangement's inlet channel and outlet channel, inlet channel and outlet channel's vertical cross-section all is regular triangle, one side of the air inlet channel, which is close to the outlet end of the filter body, is provided with a first baffle, one side of the air outlet channel, which is close to the inlet end of the filter body, is provided with a second baffle, and heat insulation filler is filled between the heat insulation inner tube and the outer tube.

Preferably, the inner wall of the top of the box body is connected with the support through screw threads, the support is U-shaped, the inner wall of the support is connected with the rubber pad through glue, the support is sleeved with the pipe shell, and the bottom of the box body is uniformly provided with trundles.

Preferably, the exhaust pipe of the diesel generating set is fixedly connected with a first hard pipe, the first hard pipe is fixedly connected with a corrugated pipe, the corrugated pipe is fixedly connected with a second hard pipe, and the second hard pipe is connected with the front end cover through a flange.

Preferably, the air inlet pipe of the diesel generating set is fixedly connected with the air suction cover, the rear side wall of the box body is hinged with the box door, the exhaust tail pipe movably penetrates through the box door, and the box door is provided with a filter screen at a position close to the air suction cover.

Preferably, the first spacer ring and the second spacer ring are integrally formed with the pipe shell, a cock is arranged above a cavity between the first spacer ring and the second spacer ring, and the cock is screwed and connected with the pipe shell.

Preferably, the filter body is made of recrystallized silicon carbide or silicon-bonded silicon carbide, the porosity of the filter body is more than 60%, and the average pore diameter of the filter body is 20 microns.

Preferably, the first baffle and the second baffle are integrally formed with the filter body, the wall thickness of the first baffle is equal to that of the second baffle, and the distance between the adjacent air inlet channel and the air outlet channel is equal to that between the adjacent air inlet channel and the adjacent air outlet channel.

Preferably, the positive electrode connector and the negative electrode connector of the spiral heating pipe penetrate through the heat insulation inner pipe and then extend into the heat insulation filler, and the heat insulation filler is made of aerogel felt.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has novel structure and compact structure, adopts the spiral heating pipe to annularly heat the particle catcher so as to achieve the purposes of effectively removing particles and realizing the quick regeneration of the particle catcher, has good coupling effect of the oxidation type catalytic converter and the particle catcher, can well eliminate black smoke, has more than 95 percent of black smoke filtering effect, and further enhances the thermal shock resistance and the structural strength of the filter body through the design of the triangular gas channel;

2. the pipe shell is simple and convenient to mount and easy to dismount, and a back flushing method is convenient to be adopted for the particle catcher, so that particles attached to the filter body flow out from the upper part of the cavity between the first spacing ring and the second spacing ring;

3. the oxidation type catalyst and the particle trap are restrained in the pipe shell through the first pressure spring and the second pressure spring, and the first pressure spring and the second pressure spring can provide flexibility to absorb and buffer vibration from the diesel generator set, so that the oxidation type catalyst and the particle trap are prevented from being damaged by vibration.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the tube housing of the present invention;

FIG. 3 is a left side view of the particulate trap of the present invention;

FIG. 4 is a right side view of the particulate trap of the present invention;

fig. 5 is a schematic view of the structure of the unit in the filter body.

In the figure: the device comprises a box body 1, a box door 2, a diesel generating set 3, a pipe shell 4, a front end cover 5, a rear end cover 6, a first spacer ring 7, a second spacer ring 8, a first pressure spring 9, an oxidation type catalytic converter 10, a second pressure spring 11, a filter body 12, an air inlet channel 13, an air outlet channel 14, a first baffle 15, a second baffle 16, a spiral heating pipe 17, an inner heat insulation pipe 18, an outer heat insulation pipe 19, a heat insulation filler 20, a cock 21, a support 22, a first hard pipe 23, a corrugated pipe 24, a second hard pipe 25, an air suction cover 26, a filter screen 27 and an exhaust tail pipe 28.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides an urgent feeding mechanism of electric quantity among road work progress, includes box 1, and box 1 embeds there is diesel generating set 3, and diesel generating set 3's blast pipe is linked together with pipe casing 4, and pipe casing 4 embeds there are oxidation type catalyst converter 10 and particulate trap.

The oxidation catalyst 10 is a conventional oxidation catalyst converter (DOC) for diesel engines, and the formulation of Pt/Pd in heavy metals is 5: 1. The oxidation catalyst 10 converts carbon monoxide (CO) and Hydrocarbons (HC) in the exhaust pipe of the diesel generator set 3 into harmless water (H20) and carbon dioxide (CO2) by an oxidation reaction.

The particle catcher is formed by sequentially sleeving and combining a filter body 12, a spiral heating pipe 17, a heat insulation inner pipe 18 and an outer pipe 19 from inside to outside. The filter body 12 is provided with the inlet channels 13 and the outlet channels 14 which are arranged in parallel and staggered, the filter body 12 is made of recrystallized silicon carbide, compared with the traditional cordierite filter carrier, the cordierite filter carrier has better thermal shock resistance and heat resistance, and in order to further enhance the thermal shock resistance and the structural strength of the filter body 12, the vertical sections of the inlet channels 13 and the outlet channels 14 are both in a regular triangle shape, namely, a triangular gas channel. As shown in fig. 5, the figure is a schematic diagram of a unit structure of the filter body 12, the unit is a regular hexagon, and three inlet channels 13 and three outlet channels 14 are arranged inside the unit in a parallel and staggered manner. A plurality of units are spliced into a complete filter body 12 in a honeycomb mode, adjacent units are bonded by high-temperature-resistant ceramic fibers during splicing, the ceramic fibers are stable and reliable, and the thermal shock resistance after bonding is good.

Wherein, the side of the inlet channel 13 close to the outlet end of the filter body 12 is provided with a first baffle 15, the side of the outlet channel close to the inlet end of the filter body 12 is provided with a second baffle 16, the first baffle 15 and the second baffle 16 are integrally formed with the filter body 12, the wall thickness of the first baffle 15 is equal to that of the second baffle 16, and is equal to the distance between the adjacent inlet channel 13 and the outlet channel 14. Due to the existence of the first baffle 15 and the second baffle 16, the two ends of the adjacent inlet channels 13 and outlet channels 14 are blocked and closed alternately, and the channels are separated by the thin wall of the filter body 12 to form independent flow channels. After the exhaust gas enters the inlet channel 13, the exhaust gas can only enter the outlet channel 14 through the tiny pores on the thin wall of the filter body 12 and is discharged out of the pipe housing 4 under the pressure of the exhaust gas. In the process, particles with the particle size larger than the pore size of the thin wall of the filter body 12 in the tail gas are intercepted and attached to the surface of the thin wall of the filter body 12, and the relatively clean tail gas can pass through and be discharged, so that the filtering is realized, and the purpose of reducing the emission of tail gas particles is achieved. In this embodiment, the porosity of the filter body 12 is greater than 60% and the average pore size is 20 microns.

An insulating filler 20 is filled between the insulating inner tube 18 and the outer tube 19. The spiral heating pipe 17 is a metal pipe in which an electric heating wire is inserted, and a gap portion is tightly filled with crystalline magnesium oxide having good thermal conductivity and insulation. The two ends of the heating wire are the positive electrode joint and the negative electrode joint of the spiral heating pipe 17, the positive electrode joint and the negative electrode joint of the heating wire penetrate through the heat insulation inner pipe 18 and then extend into the heat insulation filler 20, the heat insulation filler 20 is made of aerogel felt, and the heat insulation performance is good. The positive electrode joint and the negative electrode joint of the spiral heating pipe 17 are electrically connected with the positive electrode and the negative electrode of an external power supply, the loop is connected with a switch in series, the switch is turned on, the spiral heating pipe 17 works and heats the filter body 12 to 600 ℃, and the filter body 12 is regenerated and can be continuously used.

The front end flange of pipe casing 4 connects front end housing 5, and the rear end screw thread of pipe casing 4 connects rear end housing 6, and tail pipe 28 is connected to rear end housing 6 screw thread, is equipped with first spacer ring 7 and second spacer ring 8 in the pipe casing 4, is equipped with first pressure spring 9 and oxidation type catalyst converter 10 between first spacer ring 7 and the front end housing 5, is equipped with second pressure spring 11 and particle trap between second spacer ring and the rear end housing 6, first spacer ring 7 and second spacer ring 8 all with pipe casing 4 integrated into one piece. The oxidation catalyst 10 and the particulate trap are constrained to the pipe housing 4 by a first compression spring 9 and a second compression spring 11, the first compression spring 9 and the second compression spring 11 providing flexibility to absorb and dampen vibrations from the diesel-electric set 3.

A cock 21 is arranged above the cavity between the first spacer ring 7 and the second spacer ring 8, and the cock 21 is screwed to connect the pipe shell 4. The pipe shell 4 is taken down, the front end cover 5 is blocked, the cock 21 is unscrewed, the filter body 12 is blown back from the rear end cover 6 by a fan, particles can flow out from the upper part of the cavity between the first spacing ring 7 and the second spacing ring 8, and the filter body 12 is regenerated and can be continuously used.

An air inlet pipe of the diesel generator set 3 is fixedly connected with an air suction cover 26, the rear side wall of the box body 1 is hinged with the box door 2, and an exhaust tail pipe 28 movably penetrates through the box door 2. The screw thread connection direction of the tail pipe 28 and the rear end cover 6 is opposite to the screw thread direction of the rear end cover 6 and the pipe shell 4, so that the tail pipe 28 can be unscrewed, the tail pipe 28 is taken out of the box door 2, and then the box door 2 is opened, so that the pipe shell 4 is maintained. The box door 2 is provided with a filter screen 27 at the position close to the air suction cover 26, the filter screen 27 is woven by stainless steel wires, and the filter screen 27 is welded with the box door 2.

An exhaust pipe of the diesel generator set 3 is fixedly connected with a first hard pipe 23, the first hard pipe 23 is fixedly connected with a corrugated pipe 24, the corrugated pipe 24 is fixedly connected with a second hard pipe 25, and the second hard pipe 25 is connected with the front end cover 5 through a flange. By means of the bellows 24, the exhaust line is able to withstand slight vertical vibrations and also to relieve thermal expansion of the line. Box 1 top inner wall screw thread linking bridge 22, support 22 is the U style of calligraphy, and support 22 inner wall is glued and is connected the rubber pad, and support 22 cup joints with pipe casing 4 mutually, and isolated pipe casing 4 is to the weight of exhaust pipe through support 22 to provide the vibration that flexible absorption and buffering come from diesel generating set 3 for support 22 through the rubber pad. The bottom of the box body 1 is evenly distributed with trundles, and the trundles are convenient for the box body 1 to carry out turnover.

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

1. The utility model provides an urgent feeding mechanism of electric quantity in road work progress which characterized in that: including box (1), box (1) embeds there are diesel generating set (3), the blast pipe of diesel generating set (3) is linked together with pipe casing (4), pipe casing (4) embeds there are oxidation type catalyst converter (10) and particle trap, and front end flange joint front end housing (5) of pipe casing (4), and the rear end screw thread of pipe casing (4) connects rear end housing (6), tail pipe (28) is connected in rear end housing (6) screw thread, be equipped with first spacer ring (7) and second spacer ring (8) in pipe casing (4), be equipped with first pressure spring (9) and oxidation type catalyst converter (10) between first spacer ring (7) and front end housing (5), be equipped with second pressure spring (11) and particle trap between second spacer ring and rear end housing (6), the particle trap is from inside to outside by filter body (12) in proper order, Spiral heating pipe (17), thermal-insulated inner tube (18) and outer tube (19) cup joint the combination and form, filter body (12) are equipped with parallel staggered arrangement's inlet channel (13) and outlet channel (14), the vertical cross-section of inlet channel (13) and outlet channel (14) all is regular triangle, and one side that inlet channel (13) are close to filter body (12) exit end is equipped with first baffle (15), and one side that outlet channel is close to filter body (12) entrance point is equipped with second baffle (16), it has thermal-insulated filler (20) to fill between thermal-insulated inner tube (18) and outer tube (19).

2. The device for supplying electric quantity for emergency in road construction process according to claim 1, wherein: the inner wall screw thread connecting support (22) at the top of the box body (1), the support (22) is U-shaped, the inner wall of the support (22) is connected with a rubber pad in a gluing mode, the support (22) is sleeved with the pipe shell (4), and trundles are uniformly distributed at the bottom of the box body (1).

3. The device for supplying electric quantity for emergency in road construction process according to claim 1, wherein: the exhaust pipe of the diesel generator set (3) is fixedly connected with a first hard pipe (23), the first hard pipe (23) is fixedly connected with a corrugated pipe (24), the corrugated pipe (24) is fixedly connected with a second hard pipe (25), and the second hard pipe (25) is connected with a front end cover (5) in a flange mode.

4. The device for supplying electric quantity for emergency in road construction process according to claim 1, wherein: the air inlet pipe fixed connection of diesel generating set (3) cover (26) that induced drafts, lateral wall hinged joint chamber door (2) behind box (1), tail pipe (28) activity runs through chamber door (2), chamber door (2) are equipped with filter screen (27) in its position department that is close to cover (26) that induced drafts.

5. The device for supplying electric quantity for emergency in road construction process according to claim 1, wherein: first spacer ring (7) and second spacer ring (8) all with pipe casing (4) integrated into one piece, be equipped with cock (21) above the cavity between first spacer ring (7) and second spacer ring (8), cock (21) screw thread connection pipe casing (4).

6. The device for supplying electric quantity for emergency in road construction process according to claim 1, wherein: the filter body (12) is made of recrystallized silicon carbide or silicon combined silicon carbide, the porosity of the filter body (12) is more than 60%, and the average pore diameter of the filter body is 20 microns.

7. The device for supplying electric quantity for emergency in road construction process according to claim 1, wherein: the first baffle (15) and the second baffle (16) are integrally formed with the filter body (12), the wall thickness of the first baffle (15) is equal to that of the second baffle (16), and the distance between the adjacent air inlet channel (13) and the air outlet channel (14) is equal.

8. The device for supplying electric quantity for emergency in road construction process according to claim 1, wherein: and the positive connector and the negative connector of the spiral heating pipe (17) penetrate through the heat insulation inner pipe (18) and then extend into the heat insulation filler (20), and the heat insulation filler (20) is made of aerogel felt.