Power generation chamber of diesel generator for power utilization of large-gradient long inclined shaft tunnel

Abstract

The utility model discloses a power generation chamber of a diesel generator used for electricity utilization in a large-gradient long inclined shaft tunnel, which comprises a diesel generator set arranged in the power generation chamber, a smoke exhaust pipe arranged outside the top of the power generation chamber, connected to each diesel generator through a plurality of branch pipes, and connected to a particle catcher. The top of the power generation chamber is further provided with an exhaust pipe, the exhaust pipe is connected to a smoke exhaust pipe through an exhaust fan, the two sides of the power generation chamber are provided with a plurality of air inlet branch pipes, the air inlet branch pipes are connected to a cold air header pipe, the cold air header pipe is connected to a cold air fan, and an air inlet of the cold air fan is connected into the inclined shaft tunnel through a pipeline. According to the utility model, the generated dense smoke can be treated, so that the discharged smoke meeting the environmental protection requirement is obtained; the cold air fan cools the power generation chamber, tunnel cold air is sucked in, the cost can be greatly reduced, the multiple cold air inlets are formed, and the cold air effect is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel electrical equipment, and relates to a power generation room of a diesel generator for power consumption in a long inclined shaft tunnel with a large slope. Background Technique

[0002] In order to ensure the normal operation of construction electrical equipment in the tunnel in case of power failure of the commercial power, especially in a tunnel with a large water inflow, a standby power supply must be available. The standby power supply uses a 0.4KV low-voltage diesel generator for power generation. Due to the limitations of the wire diameter and power supply distance of the power supply line, the standby power supply low-voltage diesel generator must be relocated into the tunnel to ensure that the voltage meets the needs of the electrical equipment; in a tunnel with a large water inflow, multiple pumping stations are set up. The large power load will inevitably increase the number of generators put into use. Once the power fails and the generators in the tunnel are put into operation, the tail gas pollution in the tunnel will be serious, affecting the physical health of the construction workers in the tunnel and even causing life-threatening. In order to avoid the tail gas pollution of the generators in the tunnel, high-voltage generators are used for power generation outside the tunnel.

[0003] The diesel generator set is arranged outside the tunnel. Since a large amount of thick smoke is generated during the operation of the unit, it does not meet the environmental protection requirements, and it is not easy to dissipate heat after the power generation room is enclosed. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a power generation room of a diesel generator for power consumption in a long inclined shaft tunnel with a large slope, which can discharge and treat the generated thick smoke, and can meet the environmental protection requirements after treatment, and is convenient for cooling.

[0005] The technical solution adopted by the utility model is as follows: a power generation room of a diesel generator for power consumption in a long inclined shaft tunnel with a large slope, including a power generation room, a diesel generator set is installed in the power generation room, a smoke exhaust pipe is arranged outside the top of the power generation room, the smoke exhaust pipe is connected to the smoke exhaust port of each diesel generator through multiple branch pipes, the smoke exhaust pipe is connected to a particulate trap, an exhaust fan one is installed at the air outlet of the particulate trap, an exhaust pipe is also arranged at the top of the power generation room, the exhaust pipe is connected to the smoke exhaust pipe through an exhaust fan, multiple air intake branch pipes are arranged on both sides of the power generation room, the multiple air intake branch pipes are connected to a cold air main pipe, the cold air main pipe is connected to a cold air fan, and the air intake of the cold air fan is connected to the inclined shaft tunnel through a pipeline.

[0006] Further, a mechanical automatic exhaust valve is arranged on one side of the exhaust pipe connected to the smoke exhaust pipe.

[0007] Further, a silica gel dehumidification device is arranged at the air outlet of the air intake of the cold air fan.

[0008] Further, the above particulate trap includes a housing, a DPF module 1 and a DPF module 2. The housing is a three-dimensional structure with an air inlet provided on the left side and an air outlet provided on the top. The DPF module 1 and the DPF module 2 are arranged in an interleaved manner to form a serpentine filter channel. The DPF module 1 includes an upper fixing plate, upper vertical plates and a porous wall surface channel 1. The upper fixing plate is horizontally and detachably embedded in the upper side of the housing. Multiple upper vertical plates are used, and the upper ends are fixedly connected to the bottom of the upper fixing plate. The porous wall surface channel 1 is arranged on the left side of each upper vertical plate and covers the entire surface. The DPF module 2 includes a lower fixing plate, lower vertical plates and a porous wall surface channel 2. The lower fixing plate is horizontally and detachably embedded in the lower side of the housing. Multiple lower vertical plates are used, and the lower ends are fixedly connected to the bottom of the lower fixing plate. The porous wall surface channel 2 is arranged on the left side of each lower vertical plate and covers the entire surface. Both the porous wall surface channel 1 and the porous wall surface channel 2 are located between the cavities formed by adjacent lower vertical plates and upper vertical plates. A porous wall surface channel 2 is arranged between the leftmost lower vertical plate and the housing. After the DPF module 1 and the DPF module 2 are embedded, the outer side is hermetically fixed by a cover plate in a detachable manner. The inlet end of the serpentine channel formed inside is connected to the air inlet, and the outlet end is connected to the air outlet.

[0009] Further, a spoiler fan is provided at the air inlet end of the above air intake branch pipe. The spoiler fan is rotationally connected to a support seat at the air inlet through a rotating shaft, and a power-free blade is fixedly connected circumferentially to the rotating shaft after passing through the support seat.

[0010] The beneficial effects of the present utility model: Compared with the prior art, by connecting the branch pipes (electric valves are installed on the branch pipes) of each unit to the exhaust pipe and the particulate trap, the present utility model can treat the generated thick smoke and obtain exhaust gas that meets environmental protection requirements; the cold air fan extracts the cold air from the cold air section of the inclined shaft tunnel and then sends it into the power generation room where the diesel generator is installed for cooling. The cooling in the tunnel is relatively clean, similar to the utilization of cold air in a karst cave (the temperature is lower than 20 degrees), which can greatly reduce costs. By arranging multiple cold air inlets, the cold air effect is better; an exhaust pipe is provided at the top of the power generation room to converge and centrally discharge the exhaust gas generated by each diesel generator. The equipment is more compact and it is more convenient to connect the exhaust pipe. An exhaust pipe and an exhaust fan are provided to discharge the hot air in the power generation room, which is also conducive to the entry of cold air. A mechanical automatic exhaust valve (the mechanical automatic exhaust valve for preventing backflow at the connection between the exhaust pipe of the Siemens range hood and the chimney) is provided on one side of the exhaust pipe connected to the exhaust pipe. It automatically opens when the set pressure is reached. A silica gel dehumidification device is provided at the air inlet of the cold air fan. The silica gel dehumidification device can also be provided with a serpentine channel, and moisture-absorbing silica gel particles are arranged in the serpentine channel to remove moisture from the extracted cooling air, which is more conducive to the utilization of cold air in the power generation room and avoids the influence of excessive humidity on the equipment in the power generation room. Description of the Drawings

[0011] Figure 1It is the primary circuit flow chart of the self - generating power and the mains power supply line;

[0012] Figure 2 It is the primary system diagram of the parallel operation and high - voltage boosting of the low - voltage generators in the inclined shaft of the tunnel;

[0013] Figure 3 It is the schematic side - view structure diagram of the power generation room;

[0014] Figure 4 It is the schematic front - view structure diagram of the power generation room;

[0015] Figure 5 It is the schematic side - view sectional structure diagram of the particulate trap;

[0016] Figure 6 It is the schematic front - view sectional structure diagram of the particulate trap;

[0017] Figure 7 It is the structure diagram of the particulate trap (the spatial structure removing the adsorption structure);

[0018] Figure 8 It is the structure diagram of the installation location of the muffler. Detailed implementation mode

[0019] The following further introduces the present utility model in combination with the attached drawings and specific embodiments.

[0020] Embodiment 1: As Figures 1 to 8As shown in the figure, the power generation room of a diesel generator for power consumption in a long inclined shaft tunnel with a large slope includes a power generation room 2. Inside the power generation room 2, a diesel generator set 1 is installed. Outside the top of the power generation room 2, there is a smoke exhaust pipe 3. The smoke exhaust pipe 3 is connected to the smoke exhaust ports of each diesel generator through multiple branch pipes 4. The smoke exhaust pipe 3 is connected to a particulate trap 5. An exhaust fan 6 is installed at the air outlet of the particulate trap 5. There is also an exhaust pipe 7 on the top of the power generation room 2. The exhaust pipe 7 is connected to the smoke exhaust pipe 3 through an exhaust fan 8. Multiple intake branch pipes 9 are arranged on both sides of the power generation room 2. The multiple intake branch pipes 9 are connected to a cold air main pipe 10. The cold air main pipe 10 is connected to a cold air fan 11. The air inlet of the cold air fan 11 is connected to the inclined shaft tunnel through a pipe. The cold air fan 11 extracts the cold air in the cold air section of the inclined shaft tunnel and then sends it into the power generation room where the diesel generator is installed to cool it. The cooling in the tunnel is relatively clean, similar to the utilization of cold air in a karst cave (temperature below 20 degrees), which can greatly reduce costs. By arranging multiple cold air inlets, the cold air effect is better. A smoke exhaust pipe is set on the top of the power generation room to converge and centrally discharge the smoke generated by each diesel generator. The equipment is more compact and it is more convenient to connect the smoke exhaust pipe. An exhaust pipe and an exhaust fan are set to discharge the hot air in the power generation room, which is also beneficial to the entry of cold air. On one side of the connection between the exhaust pipe 7 and the smoke exhaust pipe 3, there is a mechanical automatic exhaust valve (the mechanical automatic exhaust valve for preventing backflow at the connection between the smoke exhaust pipe of a Siemens range hood and the chimney), which automatically opens when the set pressure is reached. A silica gel dehumidification device 15 is set at the air inlet of the cold air fan 11. The silica gel dehumidification device can also be provided with a serpentine channel, and moisture-absorbing silica gel particles are arranged in the serpentine channel to remove the moisture in the extracted cooling air, which is more beneficial to the utilization of cold air in the power generation room and avoids the influence of excessive humidity on the equipment in the power generation room.

[0021] The purpose of the above improvement is as follows: Multiple diesel generators are used to form a diesel generator set 1. After forming a diesel generator set, more smoke is generated and the environmental pollution is more serious. For centralized emission, it cannot meet the environmental protection requirements. Therefore, it is necessary to treat the soot emitted by it. Moreover, after the centralized smoke exhaust is closed, the heat dissipation performance of the diesel generator set becomes poor. Therefore, it is necessary to cool it while exhausting the smoke.

[0022] By connecting the branch pipes of each unit (electric valves are installed on the branch pipes) to the smoke exhaust pipe and the particulate trap, the generated thick smoke can be treated to obtain smoke exhaust that meets the environmental protection requirements.

[0023] To facilitate the cleaning of the particulate filter, it is set as a detachable modular structure. That is, the particulate filter 5 includes a housing 501, a DPF module one 502, and a DPF module two 503. The housing 501 is a three-dimensional structure with an air inlet on the left side and an air outlet on the top. The DPF module one 502 and the DPF module two 503 are arranged alternately to form a serpentine filter channel. The DPF module one 502 includes an upper fixing plate 504, an upper vertical plate 505, and a porous wall surface channel one 506. The upper fixing plate 504 is horizontally and detachably embedded in the upper side of the housing 501. Multiple upper vertical plates 505 are used, and the upper ends are fixedly connected to the bottom of the upper fixing plate 504. The porous wall surface channel one 506 is arranged on the left side of each upper vertical plate 505 and covers the entire surface. The DPF module two 503 includes a lower fixing plate 507, a lower vertical plate 508, and a porous wall surface channel two 509. The lower fixing plate 507 is horizontally and detachably embedded in the lower side of the housing 501. Multiple lower vertical plates 508 are used, and the lower ends are fixedly connected to the bottom of the lower fixing plate 507. The porous wall surface channel two 509 is arranged on the left side of each lower vertical plate 508 and covers the entire surface. Both the porous wall surface channel one 506 and the porous wall surface channel two 509 are located between the cavities formed by the adjacent lower vertical plate 508 and the upper vertical plate 505. A porous wall surface channel two 509 is arranged between the leftmost lower vertical plate 508 and the housing 501. After the DPF module one 502 and the DPF module two 503 are embedded, the outer side is hermetically fixed by a cover plate 510 detachably. The intake end of the serpentine channel formed inside is connected to the air inlet, and the outlet end is connected to the air outlet. After the exhaust gas of the diesel generator is filtered by the particulate filter, the treatment of the exhaust gas can be realized, the particulate pollution can be reduced, and the environmental protection requirements can be met. The serpentine structure is more conducive to filtration and adsorption. The detachable module structure is convenient for cleaning after disassembly, facilitating recycling, reducing costs, and the vibration damping exhaust fan generates a negative pressure effect, improving the exhaust effect and reducing the possibility of blockage.

[0024] Due to the principle that hot air rises and cold air sinks, cold air is directly blown into the power generation room, and the cold air effect is poor. It is necessary to mix and stir the air. Installing a mixing device directly has a high cost. Therefore, a non-powered flow disturbing device is added. That is, a flow disturbing fan 12 is arranged at the intake end of the above intake branch pipe 9. The flow disturbing fan 12 is rotatably connected to a support seat 13 at the air inlet through a rotating shaft. The support seat 13 is a frame structure, reducing the resistance of air entry and making the air intake smoother. After the rotating shaft passes through the support seat 13, a non-powered blade 14 is fixedly connected circumferentially. Driven by the intake air, the non-powered blade will rotate, and then drive the outer flow disturbing fan to disturb, playing a role in mixing the hot air flow and the cold air flow in the power generation room, and also being able to better play a cooling role when blowing on the oil generator.

[0025] Example 2: As Figures 1 to 8As shown in the figure, the method for controlling the electrical load of a long inclined shaft tunnel with a large slope is as follows:

[0026] When the main power supply is cut off, the microcomputer system of the intelligent high-voltage control cabinet obtains the power failure signal, issues an instruction to disconnect the incoming line circuit of the main power high-voltage cabinet, and then closes the incoming line circuit of the high-voltage control cabinet after the diesel generator with an electronic speed governor boosts the voltage; at the same time, the diesel generator paralleling control cabinet obtains the power failure signal of the main power supply, immediately issues an instruction for the diesel generator to start automatically, and realizes the start and operation of multiple diesel generators for power generation (there are two modes: automatic / manual start). When the unit starts successfully, power is sent to the generator paralleling control cabinet. When paralleling is required, the synchronizer detects the signal, acts on the electric governor, automatically adjusts the frequency and phase of each diesel generator set to be consistent with the bus, issues a paralleling signal, acts on the air switch to close and parallel, and after paralleling, uses the manual closing switch of the main circuit to boost the power generated by paralleling through a step-up transformer and deliver 10KV high-voltage electricity into the tunnel;

[0027] When the main power supply comes back on, the microcomputer system of the intelligent high-voltage control cabinet obtains the signal that the main power supply has come back on, issues an instruction to disconnect the incoming line circuit of the high-voltage control cabinet that boosts the voltage of the generator, and then closes the incoming line circuit of the main power high-voltage cabinet. The main power supply directly provides the power demand in the tunnel; at the same time, the diesel generator paralleling control cabinet obtains the signal that the main power supply has come back on, immediately issues an instruction for the diesel generator to stop generating electricity, and realizes the stop of multiple diesel generators (there are two modes: automatic / manual start), and the electrician disconnects the disconnecting switch of the main circuit of the generator paralleling control cabinet.

[0028] 1 Construction Preparation

[0029] 1.1 Selection of Substation Equipment

[0030] Table for Selecting Power Equipment in the Emergency Power Generation Support Center of the Inclined Shaft of the Tunnel

[0031]

[0032]

[0033] 1.2 Site Selection

[0034] One piece of land with a length of 30m and a width of 8m, and one piece of land with a length of 6m and a width of 8m. The site is required to be flat and hardened, with a color steel tile roof and good ventilation all around.

[0035] 1.3 Equipment Assembly

[0036] Install 8 generators on the left side of the inclined shaft tunnel entrance. After parallel connection, introduce them into the S11-3150 / -0.4 transformer through the busbar, and introduce it into the 10KV high-voltage switchgear from the transformer. At the same time, the 10kv external power is also introduced into the high-voltage switchgear. From the high-voltage switchgear, use ZR-YJV22-10kV-3*150mm 2The high-voltage cable is introduced into the tunnel. A transformer of S11-1000 / -0.4 is installed at the 1st-level pump house in the tunnel, a transformer of S11-1000 / -0.4 is installed at the 2nd-level pump house, and a transformer of S11-1000 / -0.4 is installed at the 3rd-level pump house. While increasing transformers as required according to the load in the tunnel, corresponding generators and grid connection distribution cabinets are added outside the tunnel. After the voltage is transformed to 0.4KV by the transformers in the tunnel, it supplies power to the pumping equipment.

[0037] 2 Construction sequence

[0038] Determined according to the load of the pumping equipment in the tunnel → Generator type selection and verification → Busbar type selection and verification → 0.4KV to 10KV transformer type selection and verification → 10kV high-voltage line introduced into the distribution room → High-voltage cable laid into the tunnel → 1 transformer of 1000KVA installed at the first-level pumping station, 1 transformer of 1000KVA installed at the second-level pumping station, the same for the third level → 0.4KV distribution cabinet introduced by the transformer in the tunnel → Transformer grounding system installed → Relay protection device and control installed → On-site safety protection improved → Put into production operation.

[0039] Among them, the transformer type selection is as shown in Table 1.

[0040] Table 1 Power table of pumping machinery equipped in the inclined shaft of the tunnel

[0041]

[0042]

[0043] It can be seen from the statistical table that the rated power (KW) of all the motors in the tunnel: ΣP1 = 3036KW; the capacity (KW) of all the lighting equipment in the tunnel: ΣP2 = 10KW.

[0044]

[0045] According to the load calculation, when determining the power consumption, the circuit capacity loss and the simultaneous power consumption coefficient should be considered. P is the total power consumption in the tunnel (KVA); P1 is the rated power (KW) of all the motors in the tunnel; P2 is the rated power (KVA) of all the welding machines in the tunnel; P3 is the capacity (KW) of all the lighting equipment in the tunnel; K is the standby coefficient, 1.05 - 1.10, take 1.05; is the average power factor of the motor (the highest is 0.75–0.78 at the construction site, generally 0.65 - 0.75), take 0.75; K1, K2 and K3 are the demand coefficients, as shown in Table 2.

[0046] Table 2 Demand coefficient K value

[0047]

[0048] According to the on-site electrical equipment situation, K1 is taken as 0.6 and K2 is taken as 0.9.

[0049] Through the above estimation formula, the total electricity consumption for the construction inside the inclined shaft of the tunnel is:

[0050] P = 1.05(0.6 * 3038 / 0.75 + 0.9 * 10) = 2439

[0051] To determine the capacity of the transformer inside the tunnel, the transformer is selected based on the estimated total construction electricity consumption. Its capacity should be equal to or slightly larger than the total construction electricity consumption. And during use, it is generally better to make the electrical load borne by the transformer reach about 80% of the rated capacity.

[0052] Then the capacity of the transformer is

[0053] In the formula, P 变 is the capacity of the transformer (KVA);

[0054] Then P 变 = 1.3P = 3170 KVA

[0055] According to the above calculation, select 1 set of SZ11 - 3150 / -0.4 transformers for both inside and outside the inclined shaft of the tunnel from the transformer product catalog. It is used for boosting from 0.4 KV to 10 KV and is installed at the distribution room on the left side of the inclined shaft entrance of the tunnel, 50 meters away from the entrance.

[0056] Selection of high-voltage cables

[0057] High-voltage cables are generally selected according to the economic current density to determine the cable cross-section, and then the selected cross-section is checked by the long-term allowable current, voltage loss, and mechanical strength.

[0058] 1) Select the cable cross-section according to the economic current density. Based on the maximum load annual utilization hours of the load carried by the high-voltage cable line and the cable core material, find out the economic current density J (analyzed according to the current electricity price and material price), as shown in Table 3. Then calculate the long-term maximum load current I during normal operation max .

[0059] Table 3 Economic current density table A / mm 2

[0060]

[0061] According to the capacity and voltage of the transformer, the maximum current I on the high-voltage side of the transformer max = P 变 / U / 1.732. In the formula, I maxis the maximum current (A) on the high-voltage side of the transformer; P is the transformer capacity (kVA); U is the high-voltage; then I max = 3036 kVA / 10 kV / 1.732 = 175 A.

[0062] Safety management work must be well done for the high-voltage cable entering the tunnel. Considering that the armored cable can enhance the cable strength and prevent mechanical damage, the armored cable can be directly buried without a special cable trench during construction, or directly laid along the wall. Considering the comprehensive economic conditions and construction perspective, according to Table 4, a 3 * 150 mm 2 copper-core armored cable is selected according to the economic current density.

[0063] 2) Check the cable cross-section according to the long-term allowable current. The current-carrying capacity of the cable refers to the maximum current that the cable conductor allows to pass through at the highest allowable temperature. When selecting the cable, it must be ensured that the heat generated by the losses in each part of the cable does not cause the cable temperature to exceed its highest allowable temperature. According to the standard cross-section selected according to the economic current density, as shown in Table 4, find out its long-term allowable current I y , which should not be less than the long-term maximum load current / I max , that is, K c I y ≥ I max (K c is the correction factor of the current-carrying capacity under different design conditions).

[0064] Table 4 Allowable current-carrying capacity of 10 kV three-core power cables A

[0065]

[0066] Note: Applicable to aluminum-core cables. The allowable continuous current-carrying capacity value of copper-core cables can be multiplied by 1.29.

[0067] According to the Code for Design of Electric Power Engineering Cables, the allowable current-carrying capacity table of 10 kV three-core power cables is shown in Table 4; for the high-voltage cable entering the tunnel, a 150 mm 2 copper-core armored cable is selected. When the cable is laid along the wall, the conductor is calculated based on the highest temperature of 90 °C, and the tunnel internal environment temperature is selected as the average value of the daily maximum temperature in the hottest month plus 5 °C. The tunnel internal environment temperature is taken as 30 °C. Looking up the table, it can be known that the long-term allowable current I 2 of the 150 mm y copper-core cable is 175 A * 1.29 = 225.7 A, as shown in Table 5. When the cable in the tunnel is laid along the wall, the conductor is calculated based on the highest temperature of 90 °C and the environment temperature in the tunnel is 30 °C. Looking up the table, the correction factor K of the current-carrying capacity of the cable at different environment temperatures is 1.09.

[0068] Table 5 Correction factors of current-carrying capacity of cables below 35 kV at different environment temperatures

[0069]

[0070]

[0071] Then KI y = 1.09 * 276.1 = 246 > I max = 175A, and the selected cable cross-section meets the requirements.

[0072] Due to the poor construction operation environment in the tunnel, the tunnel is humid, and there are vehicles moving in the tunnel. Considering the actual situation in the tunnel and the load in the tunnel to reduce power loss, the cable model is selected as ZR-YJV22-10Kv-3*150mm 2 (Copper core cross-linked polyethylene insulated fine steel wire armored PVC sheathed power cable), and the cable length is 1900m.

[0073] 3. Selection of generators

[0074] The load of the pumping equipment in the inclined shaft of the tunnel is 3036KW. Select 9 generators with a capacity of 500KWA (1 as a spare). 8 × 500 = 4000KWA. Calculated according to the actual power generation power of the generator at 0.85, 4000 × 0.85 = 3400KWA > 3036KW. The selected generators meet the power supply requirements of the pumping equipment in the tunnel.

[0075] 4. Key points for parallel operation of generators and power transmission operation of intelligent high-voltage control cabinets

[0076] 1. Key points for parallel operation of low-voltage diesel generators

[0077] Before starting the low-voltage diesel generator:

[0078] 1) Check the oil level of the engine oil, the liquid level of the coolant, and the fuel volume, and check and eliminate the "three leaks" of the engine.

[0079] 2) Check whether the electrical circuit connections are reliable, and whether there are potential safety hazards such as leakage and short circuit, such as broken skin and short circuit.

[0080] 3) Whether the on-off handle of the circuit breaker is in the off state, and whether the battery cable connection is correct and reliable.

[0081] 4) Check that there are no foreign objects around the cleaning unit and the cooling fan, and there are no flammable items around the exhaust system.

[0082] 5) If the unit is started for the first time or after a long period of shutdown and then restarted, the air in the fuel system should be drained first.

[0083] Starting of low-voltage diesel generator (automatic operation steps):

[0084] 1) Press the "AUTO" button. When the remote start-up (with load) input is valid, enter the "start-up delay".

[0085] 2) The generator set status page displays the "start-up delay" countdown.

[0086] 3) After the start-up delay ends, the generator set status page displays "preheat delay XX".

[0087] 4) After preheating and starting, wait for the frequencies and phases of each generator set to start generating electricity to be automatically adjusted to be consistent with the busbar, send out a paralleling signal, automatically actuate the air switch to close and parallel, manually close the closing switch of the main circuit, and the generator supplies power.

[0088] Low-voltage diesel generator start-up (manual operation steps):

[0089] 1) Press the "MANUAL" button, and the controller enters the "manual mode", and the manual mode indicator light is on.

[0090] Press the "START" button, then start the generator set, automatically judge the start-up success, and automatically increase the speed to high-speed operation. When there are situations such as high water temperature, low oil pressure, overspeed, abnormal voltage, etc. during the operation of the diesel generator set, it can effectively and quickly protect and stop the machine.

[0091] 2) Manual shutdown: Press the "STOP" button to stop the running generator set.

[0092] 3) According to the situation, the generator parallel control cabinet has a "main / standby" selection gear. When the rotary switch points to the "main" gear, the first unit starts first, and the standby unit starts with a delay. When the rotary switch points to the "standby" gear, the priority starting units are interchanged.

[0093] During the operation of the low-voltage diesel generator:

[0094] 1) After the unit starts, check whether the operating parameters of the unit such as oil pressure, cooling water temperature, frequency, voltage, etc. are normal, and also check whether the oil level is within the specified scale range. If not, it must be added in time.

[0095] 2) Check whether there is any liquid leakage in the fuel, oil, coolant, intake and exhaust systems of the unit, whether there is any phenomenon of the generator heating, smoking and burning smell, and abnormal sounds, and deal with them in time.

[0096] 3) When the unit is running at the rated speed, run no-load for about 5 minutes. If no abnormal conditions are found, the switch can be closed to supply power to the load. When the ambient temperature is relatively low, no-load warm-up is required. After the water temperature rises to 50 - 60 °C, then close the switch to carry the load. Overloading is strictly prohibited.

[0097] 4) Check whether there is any looseness and abnormal vibration at each connection point of the unit, and deal with them in time.

[0098] 5) When the unit is running, there must be a dedicated person on duty to record the operating parameters and ambient temperature every 15 to 30 minutes.

[0099] 6) During continuous operation, check the oil level every 8 hours.

[0100] Low voltage diesel generator shutdown

[0101] 1) Before shutting down, the unit must be completely unloaded, opened, and run at no load for about 5 minutes. Turn the control key to the "0" position to shut down the unit.

[0102] 2) When the automation system is in manual mode, press the stop button to stop the unit.

[0103] 3) When the automation system is in automatic state, after the mains power is restored, the ATS-1600 / 4P dual power automatic switch is switched from the power generation position to the mains power input position, the unit stops after a speed reduction delay, and finally enters the standby state until the mains power fails again. (If you need to stop, you can also press the stop button to stop, but you need to unload and open the switch first.)

[0104] Emergency shutdown of low voltage diesel generator

[0105] 1) When the following abnormal conditions occur, emergency shutdown can be quickly taken: a. The oil pressure suddenly drops to 1.5 kg / cm 2 a. The unit does not automatically shut down because the temperature rises sharply to over 100℃ within 5 minutes; c. The oil pipe breaks, oil sprays, etc.; d. There are obvious dangers of fire, electric shock, explosion, etc. on site, the unit runs extremely unsteadily, and the smoke exhaust is abnormal; e. The unit makes abnormal noises (such as knocking sounds).

[0106] 2) Press the emergency stop button and the unit will stop immediately (the automation system has this function).

[0107] 3) If the automation system needs to be restarted after pressing the emergency stop button or after a fault, it must be restarted after the fault is eliminated. Before restarting, press the reset button (stop button) and then press the manual or automatic reduction button to enter the normal operation of the system.

[0108] 2. Key points for power transmission operation of intelligent high-voltage control cabinet

[0109] The control circuit of the generator self-generating boost main line is interlocked with the control circuit of the main power line to ensure safe power supply. If one circuit is closed, the other circuit must be disconnected. The operation process of stopping power supply of the two power supply main lines is the same, as follows:

[0110] Power transmission operation procedures:

[0111] 1) Close the high-voltage control front and rear doors, and check whether the disconnector and circuit breaker are in the open position;

[0112] 2) Insert the operating rod into the disconnector operating mechanism, and at the same time press and hold the locking position (unlock with the white arrow), then turn the mechanism clockwise to the closed position, and confirm that the disconnector is in the closed position. At this time, pull out the operating rod;

[0113] 3) Manually press the closing button on the instrument door (when abnormal, the manual mechanical closing button on the circuit breaker panel can be operated). The circuit breaker closes, and the corresponding position shows closed, and the red light is on (closing indication), and the power transmission is completed. (Note: The circuit breaker can only be closed when the disconnector is in the closed position)

[0114] Power outage operation procedure

[0115] 1) Contrary to power transmission, manually press the opening button on the instrument door (when abnormal, the manual mechanical opening button on the circuit breaker panel can be operated). The circuit breaker is in the open position, and check that there is a green light on the circuit breaker panel (opening indication) to confirm that the circuit breaker indication is in the open position;

[0116] 2) Insert the operating rod into the disconnector operating mechanism and at the same time press and hold the locking position (unlock with the white arrow), then turn the mechanism counterclockwise to the open position, and confirm that the disconnector is in the open position. Pull out the operating rod to complete the power outage.

[0117] In order to ensure that the two main lines of the mains power and the generator power generation boost do not communicate with each other, an intelligent high-voltage control cabinet is installed on the two lines to achieve line switching interlock, and a high-voltage disconnector is installed to ensure safety during the maintenance of the control cabinet. To prevent water droplets from forming on the high-voltage control cabinet due to humid air and cause electric leakage accidents, heaters are installed in the mains cabinet, the generator power generation boost control cabinet, and the high-voltage cable parallel connection cabinet of the high-voltage control cabinet for dehumidification.

[0118] Benefit analysis:

[0119] In tunnels with long excavation footage, large water inflow, and high reverse slope pumping head, it is necessary to establish multi-stage pumping stations for hierarchical pumping. Under the condition of high power at the concentrated points of tunnel electrical loads, a comparison between the parallel operation of low-voltage diesel generators outside the tunnel for power generation boost and the power supply from high-voltage generators outside the tunnel and the power supply with generators placed inside the tunnel shows the following advantages of the parallel operation of low-voltage diesel generators for power generation boost:

[0120] 1) The technology of parallel operation of low-voltage diesel generators outside the tunnel for power generation boost ensures power supply and fast power generation speed. When the mains power fails, it can quickly start the required number of generators according to the total power consumption load and there are standby generators. Once a generator in use fails, the standby generator can be started to supply power to ensure timely power supply;

[0121] 2) Comparison of the technology of parallel operation and voltage boosting of low-voltage diesel generators outside the tunnel. The procurement cost of high-voltage generators is low, the utilization rate of low-voltage diesel generators is high, the investment in the insulation level protection cost of the distribution substation is small, and the safety guarantee is high.

[0122] 3) Comparison of parallel operation and voltage boosting of low-voltage diesel generators outside the tunnel with in-tunnel generator power generation. Labor costs are saved, equipment is centrally managed and controlled, and the labor intensity of personnel is reduced; in tunnels with large water inflows, as the excavation footage increases, the more stages of the pump station design, the operation and inspection of in-tunnel generators require more than 2 people, while only 1 electrician is needed to operate and monitor the parallel operation of low-voltage diesel generators outside the tunnel.

[0123] 4) Parallel operation and voltage boosting of low-voltage diesel generators outside the tunnel. For the parallel operation and voltage boosting of low-voltage diesel generators outside the tunnel, since the number of standby generators is reduced, the equipment procurement cost is lowered, various adverse factors caused by air pollution from generator exhaust emissions are eliminated, the in-tunnel construction environment is improved, and the investment cost of ventilation equipment is reduced; for in-tunnel power generation, due to the exhaust gas of in-tunnel construction equipment, the maintenance cycle of the generator needs to be shortened, while for parallel operation and voltage boosting outside the tunnel, equipment maintenance can be carried out according to the normal cycle, saving the project's economic cost.

[0124] In summary, the effects of the above control methods are as follows:

[0125] 1) Centralized management and control of generators, and fast input of self-generated power

[0126] Generators placed in the tunnel are placed near different electrical equipment according to the power consumption load. Once the main power supply is cut off, relevant staff need to go to different positions to start the generators. Due to the dispersion of the generators, the start-up time and power supply time of the generators are greatly increased. If a generator placed in the tunnel breaks down and cannot be solved in the short term, it must be allocated from other places, greatly lengthening the power supply recovery time. By using multiple generators for parallel operation and power generation, all the generators are concentrated in the distribution substation built in the open area outside the tunnel. The operation of the equipment is jointly ensured by electricians and generator maintenance personnel, realizing centralized management of the generators. Spare generators are appropriately configured according to the load. Once a certain generator in operation breaks down, part of the load is reduced, and the spare generator is quickly put into power generation through the control system, greatly improving the delivery speed of the standby power supply when the main power supply is cut off. When the power consumption load changes, the number of operating units can be increased or decreased according to the size of the load factor. When the load factor is lower than 50%, the unit will be disconnected, and when the load factor is higher than 80%, the parallel unit will be started to make the unit operate in the most economical and fuel-saving state.

[0127] 2) Reduce equipment usage costs and labor costs, and reduce equipment exhaust pollution

[0128] For a tunnel with a long excavation advance, a large water inflow, and a high reverse slope pumping head, it is necessary to establish multiple pumping stations for hierarchical pumping, which results in many concentrated points of the tunnel's electricity load. To meet the electricity load demand, some pumping stations with large loads must be equipped with 2 to 3 generators with a capacity of over 400KW. It is necessary to excavate comprehensive chambers on the sidewalls of the tunnel to place the generators to reduce the impact on construction transportation, which increases the excavation and support costs. Moreover, the load carried by each generator is limited, and the load must be reasonably distributed, thus increasing the relevant costs of low-voltage power distribution in the tunnel. To ensure the operation of the generators, more than 2 staff members must be arranged to conduct inspections on the operation of the generators. It is necessary to communicate between the generator operators and the pumping station operators to adjust the number of operating equipment, increasing the labor intensity of the staff and the labor costs. When 2 to 3 generators in the same-level pumping station generate electricity simultaneously, the relevant staff fail to communicate effectively and conduct inspections inadequately, and do not start or stop the generators as needed according to the actual load, increasing the equipment operation costs. There is also a situation where the groundwater flow becomes smaller. One generator only drives a small part of the pumping equipment with a small load, while other generators operate at full load. However, the generator with a small load cannot be shut down because once it is shut down, the drainage volume cannot meet the requirements, which also increases the equipment operation costs. When a fault occurs during the operation of the equipment and cannot be solved, it is necessary to allocate standby generators for replacement, increasing the transfer costs. Placing the generators in the tunnel, the exhaust gas pollution of the generators seriously affects the physical health of the construction workers in the tunnel. To improve the air conditions in the tunnel, it is necessary to increase the investment in ventilation equipment, which also accelerates the maintenance cycle of the generators and increases the equipment procurement costs and maintenance costs.

[0129] Multiple generators are paralleled and boosted through a booster transformer for power generation. The original high-voltage line for the incoming city power is used for power supply. After stepping down through the transformers in the tunnel, it is supplied to each load. The low-voltage lines and protection control systems of the electricity load only need to be erected according to the load, and are not affected by the power supply demand relationship between a single generator and the load, which leads to an increase in the material costs of the low-voltage lines and protection control systems, saving the material costs of the low-voltage power supply system. The generators are centrally placed in the distribution room outside the tunnel. One electrician can operate and monitor the equipment operation through an intelligent controller, reducing the work intensity of the electrician and the labor costs. The electrician and the pumping station management personnel communicate with each other in advance, and can flexibly increase or decrease the number of paralleled generators put into operation according to the change of the load, enhancing the mobility of the generator use, and making the operation cost of the generator much lower than the situation where single generators enter the tunnel and operate independently to drive the load. By adopting multiple generators to generate electricity in parallel outside the tunnel, the relevant costs for excavating comprehensive chambers in the tunnel are reduced, facilitating the tunnel construction transportation; it avoids the impact of exhaust gas emissions on the construction workers in the tunnel (especially the pumping station management personnel). At the same time, the generators can be maintained according to the normal cycle without worrying about the phenomenon that the maintenance cycle of the generators must be shortened due to the exhaust gas emitted by the generators in the tunnel, increasing the maintenance costs.

[0130] 3) Improved the maintenance space, operation, and power usage safety of the generator

[0131] When the generator is placed in the tunnel for power generation, the construction environment in the tunnel with large water inflow is humid. Once a power outage occurs, electricians must perform generator switching operations at various pump stations in the tunnel, which will inevitably increase the possibility of electric leakage and pose certain safety hazards to the generator operators. At the same time, due to space limitations in the tunnel, it is not convenient to carry out maintenance work on the generator in the tunnel.

[0132] The generator parallel power generation center is set outside the tunnel, and all generator power supply operations are carried out in the distribution room. The distribution room is drier than the inside of the tunnel, and insulation protection is easier to implement than in the tunnel, strengthening the safety guarantee for electricians to operate equipment and providing a spacious space for the maintenance of the generator. In order to achieve fast and safe power supply through the high-voltage cable that can use the commercial power to enter the tunnel after the generator is boosted by the step-up transformer for parallel power generation, an intelligent high-voltage control cabinet is installed to interlock the high-voltage control loop of the commercial power high-voltage incoming line and the high-voltage control loop after self-boosting through the intelligent microcomputer system, so that the two incoming line loops cannot be closed and energized at the same time, ensuring the power usage safety of the power supply line.

[0133] In summary: 1. The above control method saves equipment usage costs and labor costs, creating (direct) economic benefits of 1 million yuan, with remarkable economic benefits. 2. By setting up an emergency power generation guarantee center outside the tunnel and centrally managing the construction power usage in the tunnel, the fast conversion and safe interlock of commercial power and self-generated power are achieved, ensuring the safety, quality, and construction period of tunnel construction, with remarkable social benefits. 3. It overcomes problems such as internal combustion engine exhaust pollution, inconvenient maintenance and operation, and large power usage safety hazards after the generator enters the tunnel, with remarkable energy-saving and environmental protection benefits. The above control method is applicable to long tunnels or mines with long power supply distances, large power usage loads, especially mountainous areas with unstable commercial power, tunnels or mines with large water inflows and hierarchical designs of pumping stations.

[0134] Multiple diesel generators are used to form a diesel generator set 1. After forming the diesel generator set, more exhaust gas is generated, resulting in more serious environmental pollution. The centralized emission fails to meet the environmental protection requirements. Therefore, it is necessary to treat the soot emitted by it. Moreover, after the exhaust gas is enclosed and centrally discharged, the heat dissipation performance of the diesel generator set becomes poor. Therefore, it is necessary to cool the exhaust gas while discharging it. The specific solution is as follows: The diesel generator set 1 is installed in the power generation room 2. A smoke exhaust pipe 3 is arranged outside the top of the power generation room 2. The smoke exhaust pipe 3 is connected to the smoke exhaust ports of each diesel generator through multiple branch pipes 4. The smoke exhaust pipe 3 is connected to a particulate trap 5. An exhaust fan 6 is installed at the air outlet of the particulate trap 5. An exhaust pipe 7 is also arranged on the top of the power generation room 2. The exhaust pipe 7 is connected to the smoke exhaust pipe 3 through an exhaust fan 8. Multiple intake branch pipes 9 are arranged on both sides of the power generation room 2. The multiple intake branch pipes 9 are connected to a cold air main pipe 10. The cold air main pipe 10 is connected to a cold air fan 11. The air inlet of the cold air fan 11 is connected to the inclined shaft tunnel through a pipe. The cold air fan 11 extracts the cold air in the cold air section of the inclined shaft tunnel and then sends it into the power generation room where the diesel generator is installed to cool it. The cooling in the tunnel is relatively clean, similar to the utilization of cold air in a karst cave (temperature below 20 degrees), which can greatly reduce costs. By arranging multiple cold air inlets, the cold air effect is better; A smoke exhaust pipe is arranged on the top of the power generation room to converge and centrally discharge the exhaust gas generated by each diesel generator. The equipment is more compact and it is more convenient to connect the smoke exhaust pipe. An exhaust pipe and an exhaust fan are set to discharge the hot air in the power generation room, which is also beneficial to the entry of cold air. A mechanical automatic exhaust valve is arranged on one side of the exhaust pipe 7 connected to the smoke exhaust pipe 3, which automatically opens when the set pressure is reached. A silica gel dehumidification device 15 is arranged at the air inlet of the cold air fan 11. The silica gel dehumidification device can also be provided with a serpentine channel, and moisture-absorbing silica gel particles are arranged in the serpentine channel to remove the moisture in the extracted cooling air, which is more conducive to the utilization of cold air in the power generation room and avoids the influence of excessive humidity on the equipment in the power generation room.

[0135] After a high-power diesel generator is started, it produces a lot of noise and vibration. If it is not installed properly, it will have a great impact on the service life of the equipment. Therefore, it is particularly important to install shock absorbers for the generator and soundproof the power generation room. That is, the side wall 201 of the power generation room 2 adopts a soundproof board cavity, which is filled with a glass wool layer 202. The soundproof board cavity is made of soundproof boards, and an absorbent sponge layer 203 is arranged on the inner side of the soundproof board cavity. A door is arranged on the front side of the power generation room 2, and the top is a gable roof structure. A shock-absorbing platform 204 is arranged on the ground of the power generation room 2. An installation frame 205 is fixedly connected to the shock-absorbing platform 204. The installation frame 205 is connected to the installation base plate 207 through a rubber shock absorber 206. The installation base plate 207 is fixedly connected to the frame arranged at the bottom of the diesel generator. By adopting a multi-layer soundproof structure, the noise generated by the diesel generator can be isolated, greatly reducing the decibel of the noise, avoiding affecting the nearby operating personnel, and reducing noise pollution. By cooperating with the installation of rubber shock absorbers and shock-absorbing platforms, the vibration and vibration noise transmission of the equipment can be greatly reduced, and the service life of the equipment after shock absorption is also greatly improved. Because the generator sets are prone to interference with each other, the rubber shock absorber can play a role in isolating vibration, avoiding the vibration generated by it from being transmitted to adjacent equipment, and reducing the probability of resonance. A plurality of shock-absorbing grooves 208 are arranged in the shock-absorbing platform 204, and steel balls of different sizes are placed in the shock-absorbing grooves 208, which can greatly improve the shock-absorbing effect. Moreover, by arranging the shock-absorbing platform, the diesel generator can be elevated, reducing the possibility of equipment rust and being flooded due to excessive moisture caused by outdoor placement, and improving the safety of equipment installation. A muffler 209 is installed at the exhaust port of the diesel generator. A high-temperature resistant layer 210 is arranged outside the muffler, and a soundproof sponge layer 211 is arranged outside the high-temperature resistant layer 210. This structure can further avoid the transmission of sound and reduce noise pollution.

[0136] In order to facilitate the cleaning of the particulate filter, it is set as a detachable modular structure. That is, the particulate filter 5 includes a housing 501, a DPF module one 502 and a DPF module two 503. The housing 501 is a three-dimensional structure with an air inlet on the left side and an air outlet on the top. The DPF module one 502 and the DPF module two 503 are arranged in an interleaved manner to form a serpentine filter channel. The DPF module one 502 includes an upper fixing plate 504, an upper vertical plate 505 and a porous wall surface channel one 506. The upper fixing plate 504 is horizontally and detachably embedded in the upper side of the housing 501. The upper vertical plate 505 is composed of multiple pieces, and the upper ends are fixedly connected to the bottom of the upper fixing plate 504. The porous wall surface channel one 506 is arranged on the left side of each upper vertical plate 505 and covers the entire surface. The DPF module two 503 includes a lower fixing plate 507, a lower vertical plate 508 and a porous wall surface channel two 509. The lower fixing plate 507 is horizontally and detachably embedded in the lower side of the housing 501. The lower vertical plate 508 is composed of multiple pieces, and the lower ends are fixedly connected to the bottom of the lower fixing plate 507. The porous wall surface channel two 509 is arranged on the left side of each lower vertical plate 508 and covers the entire surface. Both the porous wall surface channel one 506 and the porous wall surface channel two 509 are located between the cavities formed by the adjacent lower vertical plate 508 and the upper vertical plate 505. A porous wall surface channel two 509 is arranged between the leftmost lower vertical plate 508 and the housing 501. After the DPF module one 502 and the DPF module two 503 are embedded, the outer side is hermetically fixed by a cover plate 510 in a detachable manner. The intake end of the serpentine channel formed inside is connected to the air inlet, and the outlet end is connected to the air outlet. After the exhaust gas of the diesel generator passes through the particulate filter for filtration, the treatment of the exhaust gas can be realized, the particulate pollution can be reduced, and the environmental protection requirements can be met. The serpentine structure is more conducive to filtration and adsorption. The detachable module structure is convenient for cleaning after disassembly, facilitating recycling and reducing costs. The vibration damping exhaust fan generates a negative pressure effect, improves the exhaust effect, and reduces the possibility of blockage.

[0137] Due to the principle that hot air rises and cold air sinks, cold air is directly blown into the power generation room, and the cold air effect is poor. It is necessary to mix and stir the air. Directly installing a stirring device has a high cost. Therefore, a non-powered flow disturbance device is added. That is, a flow disturbance fan 12 is arranged at the intake end of the above-mentioned intake branch pipe 9. The flow disturbance fan 12 is rotatably connected to a support seat 13 at the air inlet through a rotating shaft. The support seat 13 is a frame structure, reducing the resistance of air entry and making the air intake smoother. After the rotating shaft passes through the support seat 13, a non-powered blade 14 is fixedly connected circumferentially. Driven by the intake air, the non-powered blade will rotate, and then drive the outer flow disturbance fan to generate disturbance, playing the role of mixing the hot air flow and the cold air flow in the power generation room. Moreover, blowing on the oil extraction generator can also better play a cooling role.

[0138] The above are only the specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims described above.

Claims

1. The power generation room of a diesel generator for power consumption in a long inclined shaft tunnel with a large slope, characterized in that: It includes a power generation room (2) with a diesel generator set (1) installed inside. There is an exhaust pipe (3) outside the top of the power generation room (2). The exhaust pipe (3) is connected to the exhaust ports of each diesel generator through multiple branch pipes (4). The exhaust pipe (3) is connected to a particulate trap (5). An exhaust fan I (6) is installed at the air outlet of the particulate trap (5). An exhaust pipe (7) is also provided at the top of the power generation room (2). The exhaust pipe (7) is connected to the exhaust pipe (3) through an exhaust fan (8). Multiple intake branch pipes (9) are provided on both sides of the power generation room (2). The multiple intake branch pipes (9) are connected to a cold air main pipe (10). The cold air main pipe (10) is connected to a cold air blower (11). The intake port of the cold air blower (11) is connected to the inclined shaft tunnel through a pipeline.

2. The power generation room of the diesel generator for power consumption in a long inclined shaft tunnel with a large slope according to claim 1, characterized in that: A mechanical automatic exhaust valve is provided on one side where the exhaust pipe (7) is connected to the exhaust pipe (3).

3. The power generation room of the diesel generator for power consumption in a long inclined shaft tunnel with a large slope according to claim 1, characterized in that: A silica gel dehumidification device (15) is provided at the intake port of the cold air blower (11).

4. The power generation room of the diesel generator for power consumption in a long inclined tunnel with a large slope according to claim 1, characterized in that: The particulate trap (5) includes a housing (501), a DPF module I (502) and a DPF module II (503). The housing (501) is a three-dimensional structure with an intake port on the left side and an air outlet on the top. The DPF module I (502) and the DPF module II (503) are arranged in an interleaved manner to form a serpentine filter channel. The DPF module I (502) includes an upper fixing plate (504), upper vertical plates (505) and a porous wall channel I (506). The upper fixing plate (504) is horizontally and detachably embedded in the upper side of the housing (501). Multiple upper vertical plates (505) are used, and the upper ends are fixedly connected to the bottom of the upper fixing plate (504). The porous wall channel I (506) is arranged on the left side of each upper vertical plate (505) and covers the entire surface. The DPF module II (503) includes a lower fixing plate (507), lower vertical plates (508) and a porous wall channel II (509). The lower fixing plate (507) is horizontally and detachably embedded in the lower side of the housing (501). Multiple lower vertical plates (508) are used, and the lower ends are fixedly connected to the top of the lower fixing plate (507). The porous wall channel II (509) is arranged on the left side of each lower vertical plate (508) and covers the entire surface. Both the porous wall channel I (506) and the porous wall channel II (509) are located between the cavities formed by the adjacent lower vertical plate (508) and the upper vertical plate (505). A porous wall channel II (509) is arranged between the leftmost lower vertical plate (508) and the housing (501). After the DPF module I (502) and the DPF module II (503) are embedded, the outside is hermetically fixed by a cover plate (510) in a detachable manner. The intake end of the serpentine channel formed inside is connected to the intake port, and the air outlet end is connected to the air outlet.

5. The power generation room of the diesel generator for power consumption in a long inclined shaft tunnel with a large slope according to claim 1, characterized in that: A spoiler fan (12) is provided at the intake end of the intake branch pipe (9). The spoiler fan (12) is rotationally connected to a support seat (13) at the intake port through a rotating shaft. After the rotating shaft passes through the support seat (13), a power-free blade (14) is circumferentially fixedly connected.

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