CN219106201U - Combined heat and power device of hydrogen fuel cell - Google Patents
Combined heat and power device of hydrogen fuel cell Download PDFInfo
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- CN219106201U CN219106201U CN202223161299.8U CN202223161299U CN219106201U CN 219106201 U CN219106201 U CN 219106201U CN 202223161299 U CN202223161299 U CN 202223161299U CN 219106201 U CN219106201 U CN 219106201U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses a hydrogen fuel cell cogeneration device which comprises an electrolytic hydrogen production device, a hydrogen storage tank, a fuel cell, a constant-temperature water tank, a heat exchanger, a hot water pump and a heating water pump, wherein the electrolytic hydrogen production device is connected to a power supply and a running water pipe, the electrolytic hydrogen production device is connected to the hydrogen storage tank, the hydrogen storage tank is connected to the fuel cell, the power supply end of the fuel cell is connected to a synchronous system, and the fuel cell is connected with a heat exchange system for using hot water and heating air by a user. The peak clipping and valley filling of the power grid power are realized, the peak clipping of the power grid power is realized, and the clean utilization of energy sources is realized; waste heat is recycled, so that the grading utilization of energy sources is realized; meanwhile, the energy supply equipment is close to a user and supplies energy according to the requirement, so that energy loss caused by long-distance transmission in a traditional energy supply mode is reduced, and the energy utilization efficiency is greatly improved.
Description
Technical Field
The utility model relates to a hydrogen fuel cell cogeneration device, and belongs to the technical field of cogeneration.
Background
Currently, CO produced with fossil energy combustion 2 The constant emission of isothermal chamber gases results in global warming. In order to solve the global warming problem, development and application of low-carbon clean energy are urgent. Hydrogen energy is considered as an ideal energy source for replacing fossil energy because it widely exists in nature, has a high heat value, and the reaction product is water.
In order to meet the requirements of social electricity consumption, the power generation capacity of the power grid power system is designed according to the maximum electricity consumption load, so that the installed capacity of the power grid power system is overlarge, financial pressure is increased, and fund waste is caused. Meanwhile, the power system generator set is frequently started and stopped for a long time (up to several hours) and the fuel consumption is high, so that the power system generator set runs continuously at night, the night output power of the power grid is larger than the actual power load, and the resource waste is caused.
The current lithium battery energy storage is widely applied, and the lithium battery energy storage solves the problem that the power output of a power grid is larger than the power consumption at night to a certain extent, but has the defects of short energy storage time, long charging time, serious pollution caused by battery disassembly, thermal runaway and the like. Therefore, it is necessary to develop a novel energy storage device that replaces the lithium battery to store energy to make up for the drawbacks thereof.
The current domestic hot water and heating sources mainly adopt the forms of an electric boiler, a gas water heater, an air-cooled heat pump and the like. The electric boiler and the gas water heater are used as heat sources and belong to energy conversion forms of fossil energy, so that carbon emission is increased; the air-cooled heat pump system adopts electric drive to improve low-grade heat from outdoor to high-grade heat, and has the characteristic of high energy conversion efficiency, but is greatly affected by weather, and particularly has lower efficiency when in extreme weather operation in winter. The hydrogen fuel cell system is operated to supply hot water, the generated power is consumed in situ, the hot water supply end is generated as domestic hot water and heating hot water, the comprehensive energy efficiency is more than 90%, and the energy-saving advantage which is incomparable with the heat source is provided.
Disclosure of Invention
The utility model aims to solve the technical problems that: a cogeneration device for a hydrogen fuel cell is provided to solve the problems of the prior art.
The technical scheme adopted by the utility model is as follows: the utility model provides a hydrogen fuel cell cogeneration device, including electrolysis hydrogen manufacturing equipment, the hydrogen storage tank, fuel cell, constant temperature water tank, the heat exchanger, hot-water pump and heating water pump, electrolysis hydrogen manufacturing equipment is connected to power and running water pipe, electrolysis hydrogen manufacturing equipment is connected to the hydrogen storage tank, the hydrogen storage tank is connected to fuel cell, fuel cell's power end is connected to synchronous system, fuel cell's cooling water inlet is connected to running water pipe and heat exchanger, the heat exchanger connects gradually the cooling delivery port of connecting to fuel cell behind hot-water pump and the constant temperature water tank, the heat transfer water inlet of heat exchanger is connected to heating water pump, heating water pump is connected to indoor radiator, indoor radiator is connected to the heat transfer delivery port of heat exchanger.
Preferably, a chemical adding device and a constant pressure water supplementing device are arranged on a pipeline between the heating water pump and the indoor radiator.
The hydrogen storage tank is connected with a hydrogen pressure reducing system for testing, and the hydrogen pressure reducing system for testing comprises a high-pressure reducing valve, a low-pressure reducing valve, a filter, a hydrogen flowmeter, a reducing pipe, a hose I and a hand valve I which are sequentially connected through pipelines, wherein the nitrogen cylinder and the hydrogen container are connected in parallel through angle valves before the high-pressure reducing valve.
Preferably, the high pressure reducing valve is preceded by a high pressure sensor.
Preferably, the low pressure reducing valve is followed by a low pressure sensor.
Preferably, the high-pressure relief valve and the low-pressure relief valve, the filter and the hydrogen flowmeter and the reducing pipe are respectively connected to the high-pressure relief valve, the low-pressure relief valve and the flame arrester through hand valves, the high-pressure relief valve and the low-pressure relief valve are respectively connected to the flame arrester, and an air outlet pipe of the flame arrester is an inverted U-shaped bent pipe.
Preferably, the angle valve is connected with the nitrogen cylinder and the hydrogen container through a hose II
The side-by-side pipes used in the system are arranged in the cabinet body, and the side-by-side pipes are installed through the double-end pipe clamps with adjustable positions.
The double-end pipe clamp with the adjustable position comprises a movable pipe clamping piece, a fixed pipe clamping piece, a horizontal screw rod, a horizontal adjusting connecting piece, a vertical screw rod and an adjusting screw sleeve, wherein two sides of the horizontal adjusting connecting piece are staggered and spirally connected with two horizontal screw rods, each horizontal screw rod is fixedly connected with the fixed pipe clamping piece, the fixed pipe clamping piece is detachably connected with the movable pipe clamping piece and used for fixedly connecting a pipeline, one end of the vertical screw rod is fixedly connected with the upper side or the lower side of the horizontal adjusting connecting piece, the other end of the vertical screw rod is spirally connected with the adjusting screw sleeve, and the adjusting screw sleeve is fixedly connected with a supporting beam.
Preferably, the movable pipe clamping piece and the fixed pipe clamping piece are in a semicircular structure and are fixedly connected through two locking screws.
Preferably, rubber pads are arranged between the movable pipe clamping piece and the pipeline as well as between the fixed pipe clamping piece and the pipeline.
Preferably, the horizontal screw rod is in spiral connection with the clamping piece of the fixed pipe and is locked by a locking nut.
Preferably, the end part of the adjusting screw sleeve is provided with a threaded rod smaller than the diameter of the adjusting screw sleeve, and the threaded rod penetrates through the supporting beam and is fixed by adopting a fixing nut.
The installation method of the double-end pipe clamp with adjustable positions comprises the following steps: the movable pipe clamp sheets at the two sides are dismounted, the distance between the horizontal screw rods at the two ends and the distance between the vertical screw rods are adjusted, and the vertical rod and the fixed pipe clamp sheets at the two ends can be respectively connected with the supporting beam and the pipeline when the double-head pipe clamp is mounted; two fixed pipe clamping pieces on two sides are clamped into two pipe gaps to be fixed along the length of the two fixed pipe clamping pieces, the two fixed pipe clamping pieces are put down, the two fixed pipe clamping pieces are rotated for 90 degrees when the centers of the fixed pipe clamping pieces are coplanar with the axes of the pipes, the two fixed pipe clamping pieces are abutted against the two pipes, vertical screws are adjusted to be connected to mounting holes on a supporting beam in an abutting mode, and an adjusting screw sleeve is rotated to enable the adjusting screw sleeve to be locked by nuts after being connected to the mounting holes in an abutting mode; and then the two movable pipe clamp sheets are respectively fixed on the two fixed pipe clamp sheets, and the nut is locked and the vertical screw rod is kept at a set tension to complete the installation of the whole double-head pipe clamp.
The utility model has the beneficial effects that: compared with the prior art, the utility model utilizes the night low electricity price power to operate the water electrolysis hydrogen production device to produce hydrogen energy, realizes peak clipping and valley filling of the power grid power during the daytime electricity peak value, and realizes peak shaving of the power grid power. The renewable energy sources of wind and light abandon are utilized to electrolyze water to prepare hydrogen, so that clean utilization of energy sources is realized; the fuel cell distributed energy system is used for recycling waste heat while supplying power to users, so that the hierarchical utilization of energy is realized; meanwhile, because the energy supply equipment is close to a user and supplies energy according to the requirement, the energy loss caused by long-distance transmission in the traditional energy supply mode is reduced, and the energy utilization efficiency is greatly improved; the system design follows the design principle of 'electricity by heat determination and thermoelectric balance', the installed capacity of the system is comprehensively determined by electric load, hot water load and heating load, the generated electricity is spontaneously and self-consumed in situ, and meanwhile, the waste heat of the fuel cell is recovered to prepare 65 ℃ hot water for supplying domestic hot water and heating in winter.
Drawings
FIG. 1 is a schematic diagram of the principle and construction of the present utility model;
FIG. 2 is a schematic diagram of a connection structure of a hydrogen depressurization system for testing;
FIG. 3 is a schematic perspective view of a position-adjustable double-ended clamp;
FIG. 4 is a schematic exploded perspective view of a position adjustable double-ended clamp;
FIG. 5 is a schematic diagram of a front view of a position adjustable double-ended clamp;
FIG. 6 is a schematic diagram of a two-sided tube pitch adjustment configuration of a position adjustable dual-headed tube clamp;
FIG. 7 is a schematic view of a height adjustment configuration of a position adjustable double-ended clamp;
FIG. 8 is a schematic diagram of a two-sided non-equidistant configuration of a position adjustable double-ended clamp;
fig. 9 is a schematic view of a suspension mounting structure of the position-adjustable double-ended pipe clamp.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and specific examples.
Example 1: as shown in figures 1-9, the hydrogen fuel cell cogeneration device comprises an electrolytic hydrogen production device, a hydrogen storage tank, a fuel cell, a constant temperature water tank, a heat exchanger, a hot water pump and a heating water pump, wherein the electrolytic hydrogen production device is connected to a power supply and a tap water pipe, the electrolytic hydrogen production device is connected to the hydrogen storage tank, the hydrogen storage tank is connected to the fuel cell, the power supply end of the fuel cell is connected to a synchronous system, a cooling water inlet of the fuel cell is connected to the tap water pipe and the heat exchanger, the heat exchanger is sequentially connected with the hot water pump and the constant temperature water tank and then is connected to a cooling water outlet of the fuel cell, a heat exchange water inlet of the heat exchanger is connected to the heating water pump, the heating water pump is connected to an indoor radiator, the indoor radiator is connected to a heat exchange water outlet of the heat exchanger, and a branch pipeline is connected between the hot water pump and the heat exchanger to a user tap.
Preferably, a chemical adding device and a constant pressure water supplementing device are arranged on a pipeline between the heating water pump and the indoor radiator.
The electrolytic water hydrogen production equipment comprises an electrolytic water hydrogen production device, a hydrogen purification device, a hydrogen compressor, a hydrogen storage system and a tap water supply system.
Hydrogen production power supply:
renewable energy sources generate electricity: the depth of discharge of the storage battery matched with the photovoltaic power generation and wind power generation system (about 0.5) causes that the capacity of the matched storage battery is overlarge and is about 3 times of total daily electricity consumption (W.h). The self-discharge phenomenon of the storage battery occurs, and the storage capacity of the storage battery decreases with the increase of time. Meanwhile, the service life of the storage battery can be reduced due to the excessively high ambient temperature, and the storage capacity of the storage battery can be reduced due to the excessively low ambient temperature.
Installed capacity (mw.h) design principle of renewable energy:
the installed capacity of renewable energy sources can meet the annual electricity consumption of a load end for generating electricity generated in a period of time of generating electricity and generating electricity annual by running hydrogen prepared by electrolysis of water to prepare hydrogen.
Electricity at night off-peak electricity prices. And operating the water electrolysis hydrogen production device to produce hydrogen in the night electricity price valley time period.
Design principle and operation mode:
full accumulation mode: namely, the daily electricity in the project is completely generated by operating a hydrogen fuel cell through hydrogen generated by operating the water electrolysis hydrogen production device at night, and the hydrogen fuel cell power generation system operates in a grid-isolated mode.
Partial accumulation mode: namely, the water electrolysis hydrogen production device is operated at night to produce hydrogen, and the power grid system and the hydrogen fuel cell system supply power simultaneously in the daytime and are operated in a grid connection mode.
An electrolytic water hydrogen production system: the electrolytic water hydrogen production device takes water as raw material, hydrogen is produced by electrolysis of water and the cathode side, oxygen is produced on the anode side of the electrolysis cell, and the outlet pressure of the hydrogen is between 0.1 and 0.5 Mpa. And (3) introducing hydrogen produced by preparing electrolyzed water into a hydrogen purification system for purification.
Hydrogen purification system: the fuel required by the hydrogen fuel cell is high-purity hydrogen (99.97%), and the quality of the hydrogen purified by the hydrogen purifying device is required to meet the requirements specified in fuel hydrogen for proton exchange membrane fuel cell automobile GB/T37244-2018. And the hydrogen after passing through the hydrogen purification device enters a hydrogen compressor for compression.
Hydrogen compression system and hydrogen storage system: as a buffer between the electrolytic hydrogen production device and the fuel cell, the hydrogen storage system can reduce the influence of the load change of the two systems on each other, and can supplement the shortage of the electrolytic capacity when the fuel cell runs at full load. The hydrogen pressure of the hydrogen storage tank is usually 25Mpa, and the hydrogen after coming out of the hydrogen purification device is compressed by a gas compressor and then stored in the hydrogen storage tank.
And (3) a water supply system: according to the building water supply and drainage design specification, the water supply temperature of tap water is usually 7 ℃. A part of tap water is supplied to the electrolytic water hydrogen production device and is used as the water source supplement of the electrolytic tank; the other part is used as a water supplementing source of the hot water of the heat exchange system of the hydrogen fuel cell.
And (3) a water mixing system: the temperature of the cooling water inlet of the hydrogen fuel cell needs to be maintained between 40 and 45 ℃, and the water mixing system is designed into an automatic control system for convenient management. The system comprises: a dynamic water mixing valve (comprising an electric executing mechanism), a temperature sensor, a proportional-integral controller and the like. The specific control flow is as follows: a temperature sensor (T) is arranged at the water pipe section after municipal water supply (7 ℃) and backwater (45-60 ℃) of the plate heat exchanger unit are mixed, and a temperature signal output by the temperature sensor is connected to a proportional integral control device at a water mixing valve to be compared with a set temperature value (controlled according to deviation). The electric actuating mechanism of the water mixing valve is controlled through deviation, and the opening of the water mixing valve is regulated to ensure that the water inlet temperature of cooling water of the hydrogen fuel cell needs to be maintained between 40 and 45 ℃ so as to meet the water inlet temperature requirement.
Hydrogen supply and fuel cell power generation unit: the hydrogen inlet pressure of the hydrogen fuel cell unit is about 1.0Mpa, and the high-pressure hydrogen in the hydrogen storage tank body is decompressed by the decompression device and then is supplied to the fuel cell unit.
Power supply system (synchronization system): the system comprises a synchronous grid-connected control cabinet (a PQ power quality monitoring device, a grid-connected monitoring and auxiliary control system, a gateway and Internet of things combined control system) and the like. The system adjusts the matching between the power generated by the fuel cell and the power grid, and performs power generation access control. The power generated by the fuel cell is connected to the 400V low-voltage side of the transformer in the distribution room after passing through the synchronous system, and is consumed by the electric equipment in situ.
An intelligent control system for control: and the whole system is remotely and automatically controlled through the cloud. Synchronous grid connection, power adjustment, island prevention or island operation are realized by a comprehensive power grid connection automation and distributed energy control system.
And the hot water heat exchange system comprises: the system comprises a heat storage system, a heating circulation system and a domestic hot water supply system
Heat storage system: the temperature of hot water after tap water is subjected to heat exchange through a plate heat exchanger (primary plate exchange) of the hydrogen fuel cell is 65 ℃, and backwater of a heating system is mixed with tap water, and is stored in a heat storage water tank after heat exchange with circulating water in the fuel cell through the plate heat exchanger. The heat preservation and water level control flow of the heat storage water tank is as follows:
(1) Thermal insulation system: in order to ensure that the temperature of water in the water tank is kept unchanged, an insulating layer is arranged outside the water tank. The heat preservation layer is externally coated on the heat storage water tank by adopting centrifugal glass wool, and the thickness of the heat preservation layer is ensured after heat preservation and heat insulation calculation.
(2) And (3) a water level control system: the water level control signal control system is arranged at the water level of the heat storage water tank, the water level control signal detection device detects the water level in the water tank, once the water level reaches a control line, the water tank stops water inflow, meanwhile, the water inflow valve of the parallel water tank is opened, and the water inflow mode is started.
(3) Pressure isolation system: and the pressure bearing of the internal plate heat exchanger of the hydrogen fuel cell is isolated from the pressure of the heating circulation system through the external plate heat exchanger. By arranging the plate heat exchanger, water systems with different pressure levels are isolated, and safe operation of the systems is ensured.
Heating circulation system: the tail end heating circulation system is a closed system, part of hot water passes through a plate heat exchanger unit (two-stage plate exchange) to heat the heating backwater of the heating circulation system, and the backwater becomes water supply (60 ℃) to be supplied to the indoor tail end heat dissipation system of the building after heat exchange.
Domestic hot water supply system: the domestic hot water system is an open water supply system, and water in the hot water storage tank is pressurized by a water pump to convey hot water to the roof domestic hot water tank.
The hydrogen storage tank is connected with a hydrogen pressure reducing system for testing, the hydrogen pressure reducing system for testing comprises a high-pressure reducing valve 101, a low-pressure reducing valve 102, a filter 103, a hydrogen flowmeter 104, a reducing pipe 105 and a hose I106) which are sequentially connected through pipelines, wherein a nitrogen cylinder 109 and a hydrogen container 110 are connected in parallel before the high-pressure reducing valve 101 through an angle valve 108; the high-pressure relief valve 101 is previously installed with a high-pressure sensor 111; the low pressure relief valve 102 is followed by a low pressure sensor 112; the high-pressure relief valve 101 and the low-pressure relief valve 102, the filter 103 and the hydrogen flowmeter 104 and the reducing pipe 105 are respectively connected to the high-pressure relief valve 114, the low-pressure relief valve 115 and the flame arrester 116 through the second hand valve 113, the high-pressure relief valve 114 and the low-pressure relief valve 115 are respectively connected to the flame arrester 116, an air outlet pipe of the flame arrester 116 is an inverted U-shaped bent pipe, a pipeline between the high-pressure relief valve 101 and the low-pressure relief valve 102 is grounded, and the angle valve 108 is connected with the nitrogen bottle 109 and the hydrogen container 110 through the second hose 117; the side-by-side pipes used in the system are arranged in the cabinet body, and the side-by-side pipes are installed through the double-end pipe clamps with adjustable positions.
The hydrogen pressure reducing pipeline system can fully ensure the safety of the hydrogen fuel cell test work, the convenience of operation and the accuracy of test results. The nitrogen cylinder is connected to the main pipeline of the pipeline system in front of the high-pressure reducing valve, so that the purging replacement after the pipeline installation and in daily operation is facilitated.
The downstream proper position that the nitrogen hose inserted is connected with the hose connected with the hydrogen container grid/hydrogen bottle through the angle valve, the quantity of hose and corresponding angle valve can be set up according to the hydrogen use amount, can be 1 to a plurality of, when setting up a plurality of hydrogen hose inlets, the angle valve interval sets up according to the hydrogen container grid installation operation interval requirement of connection.
And a high-pressure sensor is arranged at the downstream of the last hydrogen access angle valve and used for monitoring the pressure of the gas source, and the monitoring result is remotely transmitted into the hydrogen fuel cell testing chamber, so that the tester can conveniently master the hydrogen storage amount, reasonably arrange the testing time and timely supplement the hydrogen.
The high pressure sensor is connected with a secondary pressure reducing system consisting of a high pressure reducing valve and a low pressure reducing valve, the high pressure reducing valve reduces the pressure of high pressure hydrogen (about 15 MPa) from a gas cylinder to 2-5MPa, and the pressure is reduced to the pressure required by the hydrogen for testing the hydrogen fuel cell through the low pressure reducing valve, and the pressure is usually 1-1.6MPa. The pressure reducing system formed by the two-stage pressure reducing valve can ensure the stable hydrogen pressure of the hydrogen inlet fuel cell system and prevent the pressure fluctuation from influencing the test.
The high-pressure relief valve is connected with the high-pressure relief valve through the second hand valve, when the pipeline pressure rises due to damage or failure of the high-pressure relief valve, the high-pressure relief valve takes off to release hydrogen through the release pipe, and damage to the low-pressure relief valve and subsequent equipment caused by high-pressure gas can be prevented.
The low pressure sensor is arranged at the downstream of the low pressure reducing valve and used for monitoring the pressure of hydrogen entering the hydrogen fuel cell, the monitoring result is remotely transmitted into the hydrogen fuel cell testing chamber, the hydrogen supply condition is convenient for a tester to master, the stability of the hydrogen supply pressure is ensured, and relevant factors are timely searched and removed when the hydrogen pressure fluctuates, so that the influence on the test is avoided.
The filter is arranged at the downstream of the low-pressure sensor, so that trace particulate impurities possibly carried in the hydrogen can be filtered, and damage to a downstream hydrogen flowmeter and a hydrogen fuel cell is avoided.
The low-pressure safety valve is connected to the downstream of the filter through the second hand valve, when the pipeline pressure is increased due to damage or failure of the low-pressure reducing valve, the low-pressure safety valve takes off to discharge hydrogen through the discharge pipe, and damage of high-pressure gas to the hydrogen flowmeter and the hydrogen fuel cell can be prevented.
And a hydrogen flowmeter is arranged at a proper position connected with the downstream of the low-pressure safety valve, the flowmeter has the functions of accumulating flow and measuring the flow in real time, and the measurement result is remotely transmitted into the hydrogen fuel cell test chamber, so that a tester can conveniently master the hydrogen consumption data, and basic data is provided for the hydrogen fuel cell test. In order to ensure the accuracy of flow measurement, a mass flowmeter is preferred, and the specific installation position is determined according to the installation requirement of the hydrogen flowmeter.
The downstream of the flowmeter is connected with a relief pipe through a second hand valve for purging and replacement of the pipeline, and the second hand valve is in a normally closed state during normal use.
And a reducing pipe with corresponding size is arranged at the downstream of the flowmeter according to the size of the hydrogen inlet of the hydrogen fuel cell so as to ensure that the internal hydrogen pipeline of the hydrogen fuel cell equipment is matched with the external hydrogen supply pipeline interface.
A hose is arranged at a proper position of the downstream pipeline system of the reducing pipe entering the hydrogen fuel cell testing chamber, so that the tail end of the pipeline system is flexibly connected with the hydrogen inlet of the hydrogen fuel cell.
The first hand valve is arranged in the testing chamber before the downstream pipeline system of the hose is connected with the hydrogen inlet of the hydrogen fuel cell, and the hydrogen is controlled to enter/cut out of the hydrogen fuel cell through the on/off of the first hand valve, so that the operation of a tester is facilitated.
The outlets of the high-pressure safety valve, the low-pressure safety valve and the hand valve II are connected with a discharge pipe, and the purging gas, the gas released by the overpressure and the like are discharged into the atmosphere through the discharge pipe. The outlet of the discharge pipe is arranged at a high position, so that the gas can be conveniently diffused, and the hydrogen is prevented from gathering to form a dangerous environment. The tail end of the discharge pipe is provided with an inverted U-shaped bend, so that the effect of preventing rainwater from entering can be achieved. The flame arrester is arranged near the outlet of the discharge pipe, so that the effect of preventing the hydrogen emission from burning can be achieved.
In order to prevent electric spark caused by friction static electricity generated by hydrogen flowing in the pipe and further cause fire explosion accidents, the pipeline is provided with static grounding, and the number of the static grounding is properly increased or decreased according to the length of the pipeline system, but is not less than one place.
The double-end pipe clamp with adjustable positions comprises a movable pipe clamping piece 201, a fixed pipe clamping piece 202, horizontal screws 203, a horizontal adjusting connecting piece 204, vertical screws 205 and an adjusting screw sleeve 206, wherein two sides of the horizontal adjusting connecting piece 204 are staggered and spirally connected with two horizontal screws 203, each horizontal screw 203 is fixedly connected with the fixed pipe clamping piece 202, the fixed pipe clamping piece 202 is detachably connected with the movable pipe clamping piece 201 and is used for fixedly connecting a pipeline 211, one end of the vertical screw 205 is fixedly connected to the upper side or the lower side of the horizontal adjusting connecting piece 204, the other end is spirally connected to the adjusting screw sleeve 206, the adjusting screw sleeve 206 is fixedly connected to a supporting beam 210, the double-side horizontal screw is adopted to connect the pipe clamp, and under the condition of fixed supporting points, the unequal distance adjustment of the upper side can be realized, so that the double-end pipe clamp is suitable for the installation and fixation of different parallel pipelines, the height is adjustable, the application of pipelines with different heights is facilitated, and the application range is wider; the pipe clamp has the advantages that the pipe clamp number with other single functions is reduced under the conditions of high requirement on fastening installation and vibration reduction and insufficient installation space, so that the assembly efficiency of a pipeline system is improved, the material cost of the pipeline system is reduced, the reliability of the pipeline system is improved, a plurality of joints exist on a metal pipeline used in a hydrogen fuel cell system and a cooling pump runs, a double-head structure is adopted, the pipelines are integrated into a whole, on one hand, looseness of the joints caused by long-term vibration of operation of a water pump is avoided, on the other hand, the whole pipeline can form a whole, the whole rigidity is better, and the running stability is better.
The movable pipe clamping piece 201 and the fixed pipe clamping piece 202 are of semicircular structures, are fixedly connected through two locking screws 207, are of hoop-shaped fixed structures, are stable and reliable in connection, and are convenient and quick to assemble and disassemble.
The horizontal screw 203 is in screw connection with the fixed pipe clamping piece 202 and is locked by the locking nut 208, so that the horizontal screw is easy to assemble and disassemble, and the connection is stable and reliable.
The end of the adjusting screw sleeve 206 is provided with a threaded rod 212 smaller than the diameter of the adjusting screw sleeve, the threaded rod 212 penetrates through the supporting beam 210 and then is fixed by adopting a fixing nut 213, the connection is convenient and quick, the connection is stable and reliable, a plurality of through holes penetrating through the threaded rod 212 at uniform intervals are formed in the length direction of the supporting beam, and the position adjustment is more convenient.
The installation method of the double-end pipe clamp with adjustable positions comprises the following steps: the movable pipe clamp sheets at the two sides are dismounted, the distance between the horizontal screw rods at the two ends and the distance between the vertical screw rods are adjusted, and the vertical rod and the fixed pipe clamp sheets at the two ends can be respectively connected with the supporting beam and the pipeline when the double-head pipe clamp is mounted; two fixed pipe clamping pieces on two sides are clamped into two pipe gaps to be fixed along the length of the two fixed pipe clamping pieces, the two fixed pipe clamping pieces are put down, the two fixed pipe clamping pieces are rotated for 90 degrees when the centers of the fixed pipe clamping pieces are coplanar with the axes of the pipes, the two fixed pipe clamping pieces are abutted against the two pipes, vertical screws are adjusted to be connected to mounting holes on a supporting beam in an abutting mode, and an adjusting screw sleeve is rotated to enable the adjusting screw sleeve to be locked by nuts after being connected to the mounting holes in an abutting mode; and then the two movable pipe clamp sheets are respectively fixed on the two fixed pipe clamp sheets, and the nut is locked and the vertical screw rod is kept at a set tension to complete the installation of the whole double-head pipe clamp.
By adopting the installation method, on one hand, the double-end pipe clamp can be quickly installed, and on the other hand, the stable and reliable installation can be ensured.
The foregoing is merely illustrative of the present utility model, and the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the scope of the present utility model, and therefore, the scope of the present utility model shall be defined by the scope of the appended claims.
Claims (10)
1. A hydrogen fuel cell cogeneration device, characterized by: the device comprises electrolytic hydrogen production equipment, a hydrogen storage tank, a fuel cell, a constant temperature water tank, a heat exchanger, a hot water pump and a heating water pump, wherein the electrolytic hydrogen production equipment is connected to a power supply and a tap water pipe, the electrolytic hydrogen production equipment is connected to the hydrogen storage tank, the hydrogen storage tank is connected to the fuel cell, the power supply end of the fuel cell is connected to a synchronous system, a cooling water inlet of the fuel cell is connected to the tap water pipe and the heat exchanger, the heat exchanger is sequentially connected with the hot water pump and the constant temperature water tank and then is connected to a cooling water outlet of the fuel cell, a heat exchange water inlet of the heat exchanger is connected to the heating water pump, the heating water pump is connected to an indoor radiator, the indoor radiator is connected to a heat exchange water outlet of the heat exchanger, and electric power hydrogen production is carried out when the electrolytic hydrogen production equipment adopts low electricity at night.
2. A hydrogen fuel cell cogeneration apparatus according to claim 1, wherein: and a pipeline between the heating water pump and the indoor radiator is provided with a dosing device and a constant pressure water supplementing device.
3. A hydrogen fuel cell cogeneration apparatus according to claim 1, wherein: the hydrogen storage tank is connected with a hydrogen pressure reducing system for testing, the hydrogen pressure reducing system for testing comprises a high-pressure reducing valve (101), a low-pressure reducing valve (102), a filter (103), a hydrogen flowmeter (104), a reducing pipe (105), a hose I (106) and a hand valve I (107) which are sequentially connected through pipelines, and a nitrogen cylinder (109) and a hydrogen container (110) are connected in parallel before the high-pressure reducing valve (101) through an angle valve (108); a high-pressure sensor (111) is arranged in front of the high-pressure reducing valve (101); a low pressure sensor (112) is installed behind the low pressure relief valve (102).
4. A hydrogen fuel cell cogeneration apparatus according to claim 3, wherein: the high-pressure relief valve (101) and the low-pressure relief valve (102), the filter (103) and the hydrogen flowmeter (104) and the reducing pipe (105) are respectively connected to the high-pressure relief valve (114), the low-pressure relief valve (115) and the flame arrester (116) through the second hand valve (113), the high-pressure relief valve (114) and the low-pressure relief valve (115) are respectively connected to the flame arrester (116), and an air outlet pipe of the flame arrester (116) is an inverted U-shaped bent pipe.
5. A hydrogen fuel cell cogeneration apparatus according to claim 1, wherein: the side-by-side pipelines used in the device are arranged in the cabinet body, and the side-by-side pipelines are installed through the double-end pipe clamps with adjustable positions.
6. A hydrogen fuel cell cogeneration apparatus according to claim 5, wherein: the double-end pipe clamp with the adjustable position comprises a movable pipe clamping piece (201), a fixed pipe clamping piece (202), a horizontal screw (203), a horizontal adjusting connecting piece (204), a vertical screw (205) and an adjusting screw sleeve (206), wherein two sides of the horizontal adjusting connecting piece (204) are staggered and spirally connected with the two horizontal screw (203), each horizontal screw (203) is fixedly connected with the fixed pipe clamping piece (202), the fixed pipe clamping piece (202) is detachably connected with the movable pipe clamping piece (201) and is used for fixedly connecting a pipeline (211), one end of the vertical screw (205) is fixedly connected to the upper side or the lower side of the horizontal adjusting connecting piece (204), the other end of the vertical screw is spirally connected to the adjusting screw sleeve (206), and the adjusting screw sleeve (206) is fixedly connected to a supporting beam (210).
7. A hydrogen fuel cell cogeneration apparatus according to claim 6, wherein: the movable pipe clamping piece (201) and the fixed pipe clamping piece (202) are of semicircular structures and are fixedly connected through two locking screws (207).
8. A hydrogen fuel cell cogeneration apparatus according to claim 7, wherein: rubber pads (209) are arranged between the movable pipe clamping piece (201) and the fixed pipe clamping piece (202) and the pipeline (211).
9. A hydrogen fuel cell cogeneration apparatus according to claim 6, wherein: the horizontal screw rod (203) is in spiral connection with the fixed pipe clamping piece (202) and is locked by a locking nut (208).
10. A hydrogen fuel cell cogeneration apparatus according to claim 6, wherein: the end part of the adjusting screw sleeve (206) is provided with a threaded rod (212) smaller than the diameter of the adjusting screw sleeve, and the threaded rod (212) penetrates through the supporting beam (210) and is fixed by adopting a fixing nut (213).
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| CN202223161299.8U CN219106201U (en) | 2022-11-28 | 2022-11-28 | Combined heat and power device of hydrogen fuel cell |
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| CN202223161299.8U CN219106201U (en) | 2022-11-28 | 2022-11-28 | Combined heat and power device of hydrogen fuel cell |
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