A mine vehicle cab temperature regulating system based on waste heat of a power device

Abstract

The present application belongs to the technical field of coal mine trackless auxiliary transportation, and provides a mine vehicle cab temperature regulation system based on power device waste heat, which solves the problem of how to recycle engine cooling water waste heat and exhaust waste heat to regulate the temperature of the mine vehicle cab. The system comprises an engine, an absorption cycle unit, a condensation and evaporation unit, and a centralized controller. The A port of a two-position four-way reversing valve is connected to the first end of a first heat exchanger via a fourth two-position three-way reversing valve. The second end of the first heat exchanger is connected to a second heat exchanger via an expansion valve, a three-position four-way reversing valve, and a double-temperature-control memory alloy reversing valve. The A port of the double-temperature-control memory alloy reversing valve is connected to the first end of the second heat exchanger, and the B port of the double-temperature-control memory alloy reversing valve is connected to the B port of the two-position four-way reversing valve. The present application can improve the utilization rate of engine waste heat and plays a crucial role in the comfort of the coal mine auxiliary transportation system under the new situation.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coal mine trackless auxiliary transportation, and particularly relates to a mine vehicle cab temperature regulation system based on power device waste heat. BACKGROUND

[0002] At present, trackless auxiliary transportation has become the main choice for modern mine transportation. The underground environment of coal mines is harsh, and there are a large amount of harmful gases, dust and noise. The driving personnel are exposed to the limited and enclosed space in the underground for a long time. More and more underground vehicles in coal mines choose to use fully enclosed cabs to improve the working environment of the driving personnel.

[0003] Among them, temperature is an important influencing factor of the cab environment. The uneven distribution of underground environmental temperature, the limited self-regulation capacity of the vehicle and the cab itself, and the internal temperature instability of the cab affect the comfort of the driving personnel.

[0004] At the same time, due to the diesel engine driven vehicles in the underground coal mine, the engine needs to be cooled and the exhaust gas needs to be discharged. Since there is gas in the underground coal mine, in order to prevent the safety hidden danger caused by the high temperature of the exhaust gas, the temperature of the exhaust gas generally needs to be controlled, and an external circulation system needs to be added to cool and cool the exhaust gas, resulting in the loss of engine power and the waste of energy.

[0005] How to recycle the engine cooling water waste heat and exhaust gas waste heat to realize the temperature regulation of the cab of the mine vehicle has become a problem to be solved at present. SUMMARY

[0006] The present application provides a mine vehicle cab temperature regulation system based on power device waste heat to solve at least one of the above technical problems in the prior art.

[0007] The application adopts the technical scheme of the following: a mine vehicle cab temperature regulation system based on power device waste heat, comprising an engine, an absorption type circulation unit, a condensation and evaporation unit and a centralized controller, the engine comprising an engine body, an engine exhaust manifold, a turbocharger, an inner circulation radiator and an outer circulation radiator, an engine cooling water circuit comprising an inner circulation water circuit and an outer circulation water circuit, wherein the inner circulation water circuit cools and radiates the engine body through an inner circulation pump and the inner circulation radiator, and the outer circulation water circuit reduces the engine tail gas temperature through an outer circulation pump, the engine exhaust manifold, the turbocharger and the outer circulation radiator; a turbine end of the turbocharger is provided with a first cooling water channel, a compressor end of the turbocharger is provided with a second cooling water channel, the first cooling water channel and the second cooling water channel are used for cooling and reducing the temperature of the turbocharger, and the first cooling water channel and the second cooling water channel are in communication with the outer circulation water circuit; an inner circulation temperature sensor, a first two-position three-way reversing valve, a second two-position three-way reversing valve and a single-temperature-control memory alloy reversing valve are sequentially arranged on the first inner circulation water circuit between the engine body and the inner circulation radiator, and an inner circulation pump and an inner circulation heat exchanger are sequentially arranged on the second inner circulation water circuit between the inner circulation radiator and the engine body; an outer circulation temperature sensor and a third two-position three-way reversing valve are arranged on the first outer circulation water circuit between the turbocharger and the outer circulation radiator, and an outer circulation pump and an outer circulation heat exchanger are arranged on the second outer circulation water circuit between the outer circulation radiator and the engine exhaust manifold; wherein the a port of the first two-position three-way reversing valve is connected with the a port of the second two-position three-way reversing valve, the b port is connected with the engine body through the inner circulation temperature sensor, the c port is connected with the first inner circulation water circuit between the second two-position three-way reversing valve and the single-temperature-control memory alloy reversing valve through the intercooler, the A port of the single-temperature-control memory alloy reversing valve is connected on the second inner circulation water circuit between the inner circulation pump and the inner circulation heat exchanger; the b port of the second two-position three-way reversing valve is connected with the P port of the single-temperature-control memory alloy reversing valve, the c port of the second two-position three-way reversing valve is connected with the heat source pipe in the first generator through the first air-controlled waste heat pump, the B port of the single-temperature-control memory alloy reversing valve is connected with the inner circulation heat exchanger, and the other end of the heat source pipe in the first generator is connected on the second inner circulation water circuit between the inner circulation pump and the inner circulation heat exchanger; the a port of the third two-position three-way reversing valve is connected with the turbocharger through the outer circulation temperature sensor, the b port is connected with the outer circulation radiator, the c port is connected with the heat source pipe in the second generator through the second air-controlled waste heat pump, and the other end of the heat source pipe in the second generator is connected on the second outer circulation water circuit between the outer circulation radiator and the outer circulation pump.The absorption cycle unit comprises an absorber, a solution pump, a solution heat exchanger, a first generator, a second generator and a waste heat generator, wherein the lithium bromide dilute solution is placed in the absorber, the dilute solution flowing out of the absorber is pressurized by the solution pump, the pressurized dilute solution is warmed by the solution heat exchanger and then enters the first generator and the second generator, the dilute solution is heated to boiling by the heat source tubes in the first generator and the second generator, and high-temperature and high-pressure coolant vapor and concentrated solution are generated, wherein two streams of coolant vapor flow out of the first generator and the second generator, are combined, enter the condensation and evaporation unit through a two-position four-way reversing valve, and finally flow back to the absorber through the two-position four-way reversing valve again, the P port of the two-position four-way reversing valve is connected with the first generator and the second generator, and the T port is connected with the absorber, the concentrated solution flows out of the first generator and the second generator, is cooled by the solution heat exchanger, and then flows back to the absorber; the condensation and evaporation unit comprises a first heat exchanger, a second heat exchanger and a fan, the A port of the two-position four-way reversing valve is connected with the first end of the first heat exchanger through a fourth two-position three-way reversing valve, the second end of the first heat exchanger is connected with the second heat exchanger through an expansion valve, a three-position four-way reversing valve and a double-temperature-control memory alloy reversing valve, the fan is arranged above the first heat exchanger and the second heat exchanger to accelerate air flow, a cab temperature sensor and an environment temperature sensor are arranged inside and outside the cab respectively; wherein the a port of the three-position four-way reversing valve is connected with the expansion valve, the b port is connected with the P port of the double-temperature-control memory alloy reversing valve, the c port is connected with the B port of the two-position four-way reversing valve, the d port is connected with an inner circulation heat exchanger and an outer circulation heat exchanger through a fifth two-position three-way reversing valve, the A port of the double-temperature-control memory alloy reversing valve is connected with the first end of the second heat exchanger, and the B port of the double-temperature-control memory alloy reversing valve is connected with the B port of the two-position four-way reversing valve; the a port of the fifth two-position three-way reversing valve is connected with the d port of the three-position four-way reversing valve, the b port is connected with the first end of the inner circulation heat exchanger, and the c port is connected with the first end of the outer circulation heat exchanger, and the second ends of the inner circulation heat exchanger and the outer circulation heat exchanger are connected with the B port of the two-position four-way reversing valve; the centralized controller is used for receiving input signals of the sensors and outputting control signals to the electromagnetic valves.

[0008] Preferably, the single-temperature-control memory alloy reversing valve comprises a first valve body, a first housing, a first valve core, a first guide sleeve, a first memory alloy spring, a first valve body spring and a first push rod, the first guide sleeve is connected to the inner side of the end of the first housing away from the first valve body, the first memory alloy spring is sleeved on the outer side of the first guide sleeve, one end of the first push rod is connected with the first valve core, and the other end is slidably arranged in the first guide sleeve, the deformation of the first memory alloy spring can drive the first push rod to push the first valve core to shift, and the first valve body is provided with the first valve body spring at both ends for resetting the first valve core.

[0009] Preferably, the double-temperature-control memory alloy reversing valve comprises a second valve body, a second housing, a second valve core, a second guide sleeve, a second memory alloy spring, a third memory alloy spring, a second valve body spring and a second push rod, the second guide sleeve is connected to the inner side of the second housing far from the second valve body, the second guide sleeve has an inner layer sleeve body and an outer layer sleeve body, the second memory alloy spring is sleeved on the inner layer sleeve body, the third memory alloy spring is sleeved on the outer layer sleeve body, one end of the second push rod is connected with the second valve core, and the other end of the second push rod is slidably arranged in the second guide sleeve, and the second memory alloy spring or the third memory alloy spring can drive the second push rod to push the second valve core to move.

[0010] Preferably, the flow direction of the cooling liquid in the first cooling water channel is opposite to the rotation direction of the impeller at the turbine end of the turbocharger, and the flow direction of the cooling liquid in the second cooling water channel is opposite to the rotation direction of the impeller at the compressor end of the turbocharger; an inner circulation one-way valve is arranged between the inner circulation radiator and the inner circulation pump, and an outer circulation one-way valve is arranged between the outer circulation radiator and the outer circulation pump.

[0011] Preferably, the second heat exchanger and the fan are arranged in the box, and the cab defogging unit comprises a ventilation opening mounting plate, a ventilation opening moving plate, an electric cylinder, an air inlet guide cover, a guide pipeline, a defogging dryer and a warm air injection pipe; the box is communicated with the cab through the ventilation opening, the ventilation opening mounting plate is arranged at the ventilation opening, the electric cylinder drives the ventilation opening moving plate to cooperate with or separate from the ventilation opening mounting plate to realize the closing or opening of the ventilation opening, the hot flow is guided through the air inlet guide cover, and the defogging is realized on the windshield through the guide pipeline, the defogging dryer and the warm air injection pipe; the electric cylinder is connected with a defogging electromagnetic valve, and the defogging electromagnetic valve is connected to the signal output end of the centralized controller.

[0012] Preferably, the air path control system comprises an air compressor, a gas storage tank, a total valve, an air treatment unit, an air pressure gauge, an air path fluctuation valve and an air control electric switch which are connected in sequence, and the circuit unit connected with the centralized controller comprises a mine generator, a storage battery, an electric leakage locking switch, a circuit power switch and a vehicle action electric control unit which are connected in sequence, and the air control electric switch is connected between the vehicle action electric control unit and the centralized controller.

[0013] Compared with the prior art, the present application has the following advantages:

[0014] The present application utilizes the waste heat of the engine cooling water and the waste heat of the tail gas for temperature regulation of the cab, and can improve the utilization rate of the engine waste heat, and plays a crucial role in the comfort of the auxiliary transportation system of the coal mine under the new situation.

[0015] Temperature-controlled memory alloy directional valves can change valve position based on temperature changes without a passive operating condition. Through the coordinated operation of various valves, they can achieve the purpose of cooling, heating, or neither cooling nor heating in the cab and circulation system. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the hydraulic control principle of a portion of the structure of the present invention;

[0018] Figure 2 for Figure 1 Schematic diagram of a two-position three-way directional valve;

[0019] Figure 3 for Figure 1 Schematic diagram of a three-position four-way directional valve;

[0020] Figure 4 This is a front view of the engine of the present invention;

[0021] Figure 5 This is a top view of the engine of the present invention;

[0022] Figure 6 This is a top view of the turbocharger of the present invention;

[0023] Figure 7 This is a side view of the turbocharger of the present invention;

[0024] Figure 8 This is a diagram showing the internal structure of the single-temperature-controlled shape memory alloy directional valve of the present invention.

[0025] Figure 9 This is a schematic diagram of the symbol for the single-temperature-controlled shape memory alloy directional valve of the present invention;

[0026] Figure 10 This is a diagram showing the internal structure of the dual-temperature-controlled shape memory alloy directional valve of the present invention.

[0027] Figure 11 This is a schematic diagram of the symbol for the dual-temperature-controlled shape memory alloy directional valve of the present invention;

[0028] Figure 12 This is a schematic diagram of part of the electronic control system of the present invention;

[0029] Figure 13 This is a schematic diagram of the cab defogging unit of the present invention;

[0030] Figure 14 This is a schematic diagram of the vehicle's external structure according to the present invention.

[0031] In the diagram: 1.1 - Engine block; 1.2 - Engine exhaust manifold; 1.3 - Turbocharger; 1.31 - First cooling water passage; 1.32 - Second cooling water passage; 1.33 - Cooling water passage inlet; 1.34 - Cooling water passage outlet; 1.35 - Exhaust gas inlet; 1.36 - Exhaust gas outlet; 1.37 - Air inlet; 1.38 - Air outlet; 1.39 - Impeller; 1.4 - Internal circulation radiator; 1.5 - External circulation radiator; 1.6 - Internal circulation pump; 1.7 - External circulation pump; 1.81 - Internal circulation temperature sensor; 1.82 - First two-position three-way directional valve; 1.83 - Second two-position three-way directional valve; 1.84 - External circulation temperature sensor; 1.85 - Third two-position three-way directional valve; 1.86 - Fourth two-position three-way directional valve; 1.87 - Fifth two-position three-way directional valve 1.88 - Reversing valve; 1.89 - Cab temperature sensor; 1.9 - Ambient temperature sensor; 1.9 - Single-temperature controlled memory alloy reversing valve; 1.91 - First valve body; 1.92 - First housing; 1.93 - First valve core; 1.94 - First guide sleeve; 1.95 - First memory alloy spring; 1.96 - First valve body spring; 1.97 - First push rod; 1.10 - Internal circulation heat exchanger; 1.11 - External circulation heat exchanger; 1.12 - Intercooler; 1.13 - First pneumatically controlled waste heat pump; 1.14 - Second pneumatically controlled waste heat pump; 1.15 - Exhaust gas treatment box; 1.16 - Internal circulation check valve; 1.17 - External circulation... 1. Ring check valve; 2.1 Absorber; 2.2 Solution pump; 2.3 Solution heat exchanger; 2.4 First generator; 2.5 Second generator; 3. Two-position four-way directional valve; 4.1 First heat exchanger; 4.2 Second heat exchanger; 4.3 Fan; 4.4 Expansion valve; 4.5 Three-position four-way directional valve; 4.6 Dual temperature-controlled shape memory alloy directional valve; 4.61 Second valve body; 4.62 Second housing; 4.63 Second valve core; 4.64 Second guide sleeve; 4.65 Second shape memory alloy spring; 4.66 Third shape memory alloy spring; 4.67 Second valve body spring; 4.68 Second push... 5-Centralized controller; 6.1-Ventilator mounting plate; 6.2-Ventilator moving plate; 6.3-Electric cylinder; 6.4-Inlet guide shroud; 6.5-Guide pipe; 6.6-Defogger dryer; 6.7-Warm air jet pipe; 6.8-Defogger solenoid valve; 6.9-Box; 7.1-Air compressor; 7.2-Air tank; 7.3-Main valve; 7.4-Air handling unit; 7.5-Pressure gauge; 7.6-Air circuit fluctuation valve; 7.7-Pneumatic control switch; 8.1-Mining generator; 8.2-Battery; 8.3-Leakage current interlock switch; 8.4-Circuit power switch; 8.5-Vehicle motion control unit. DETAILED DESCRIPTION

[0032] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of the present application.

[0033] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present specification are merely used to understand and read the disclosed content by those skilled in the art, and are not used to limit the defined conditions for implementing the present application, and therefore do not have technical substantive significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technical content of the present application. It should be noted that in the present specification, relationship terms such as first and second are merely used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between the entities.

[0034] The present application provides an embodiment:

[0035] A mine vehicle cab temperature regulation system based on waste heat of a power device, comprising an engine, an absorption cycle unit, a condensation and evaporation unit, and a centralized controller 5.

[0036] As Figure 4 , Figure 5As shown, the engine structure and cooling process of the application are as follows: the engine includes an engine body 1.1, an engine exhaust manifold 1.2, a turbocharger 1.3, an inner circulation radiator 1.4 and an outer circulation radiator 1.5, and the engine cooling water circuit includes an inner circulation water circuit and an outer circulation water circuit, the inner circulation is used for cooling the engine body 1.1, wherein the inner circulation water circuit cools and radiates the engine body 1.1 through the inner circulation pump 1.6 and the inner circulation radiator 1.4 to ensure the engine temperature and efficiency; due to the existence of gas in the coal mine, the exhaust temperature needs to be limited within a reasonable range, and the exhaust emission path is the engine body 1.1, the engine exhaust manifold 1.2, the turbocharger 1.3 and the exhaust treatment box 1.15, the turbocharger 1.3 can increase the suction amount of fresh air by using the exhaust gas to improve the working efficiency of the engine, the exhaust treatment box 1.15 can effectively reduce the harmful gases in the exhaust gas, and the outer circulation water circuit needs to be increased for cooling the exhaust emission, the outer circulation water circuit reduces the exhaust gas temperature through the outer circulation pump 1.7, the engine exhaust manifold 1.2, the turbocharger 1.3 and the outer circulation radiator 1.5, and the turbocharger 1.3 is connected with the exhaust treatment box 1.15; the inner circulation one-way valve 1.16 is arranged between the inner circulation radiator 1.4 and the inner circulation pump 1.6, and the outer circulation one-way valve 1.17 is arranged between the outer circulation radiator 1.5 and the outer circulation pump 1.7 to prevent the circulation water circuit from flowing backward.

[0037] As Figure 6 、 Figure 7As shown, the turbocharger structure and cooling process of the application is: due to the turbocharger 1.3 in the process of working, the turbocharger 1.3 will rotate at high speed, the engine exhaust high temperature exhaust gas and the high speed rotation of turbine bearing, etc., a large amount of heat will be generated; the compressor end will also generate a large amount of heat due to the high speed rotation of the impeller of the compressor; the turbine end of the turbocharger 1.3 is provided with the first cooling water channel 1.31, the compressor end of the turbocharger 1.3 is provided with the second cooling water channel 1.32, the first cooling water channel 1.31 and the second cooling water channel 1.32 are used for cooling the turbocharger 1.3, the first cooling water channel 1.31 and the second cooling water channel 1.32 are communicated with the outer circulation waterway; the cooling liquid in the first cooling water channel 1.31 and the second cooling water channel 1.32 can cool the whole turbocharger 1.3 (that is, the cooling liquid absorbs the heat emitted by the turbine end, the compressor end and the bearing end of the turbocharger 1.3, and cools them), which avoids the influence of the turbocharger 1.3 on the heat transfer rate and the emission limitation of the engine due to the high temperature, the flow direction of the cooling liquid in the first cooling water channel 1.31 is opposite to the rotation direction of the impeller of the turbine end of the turbocharger 1.3, the flow direction of the cooling liquid in the second cooling water channel 1.32 is opposite to the rotation direction of the impeller of the compressor end of the turbocharger 1.3, so that the cooling of the turbocharger 1.3 is more sufficient. The exhaust gas discharged by the engine enters the turbine end through the exhaust gas inlet 1.35, and drives the impeller 1.39 of the turbine end to rotate, the rotation of the impeller 1.39 of the turbine end drives the impeller 1.39 of the compressor end to rotate through the intermediate connecting shaft, the rotation of the compressor end impeller will compress the air entering through the air filter, and the compressed air is delivered to the engine cylinder through the air outlet 1.38, so that the amount of air entering the engine cylinder increases, thereby making the fuel burning in the engine cylinder more sufficient, and improving the output power of the engine.

[0038] As shown in the Figure 8 , Figure 9 structure and working process of the single temperature control memory alloy reversing valve of the application is: in this embodiment, the single temperature control memory alloy reversing valve 1.9 is a two-position three-way valve, which comprises a first valve body 1.91, a first shell 1.92, a first valve core 1.93, a first guide sleeve 1.94, a first memory alloy spring 1.95, a first valve body spring 1.96 and a first push rod 9.7, the first guide sleeve 1.94 is connected to the inner side of the end of the first shell 1.92 away from the first valve body 1.91, the first memory alloy spring 1.95 is sleeved on the outer side of the first guide sleeve 1.94, one end of the first push rod 9.7 is connected with the first valve core 1.93, and the other end is slidably arranged in the first guide sleeve 1.94, the deformation of the first memory alloy spring 1.95 can drive the first push rod 9.7 to push the first valve core 1.93 to shift, and the first valve body 1.91 is provided with the first valve body spring 1.96 at both ends for resetting the first valve core 1.93;

[0039] The first valve core 1.93 is in the left position by the first valve body spring 1.96 in the initial position; when the temperature is lower than the memory temperature of the first memory alloy spring 1.95, the first memory alloy spring 1.95 is deformed and elongated, and pushes the first valve core 1.93 to the right to realize the switching of the first valve core 1.93.

[0040] As shown in Figure 10 , Figure 11 The structure and working process of the double-temperature control memory alloy switching valve of the application are as follows: the double-temperature control memory alloy switching valve 4.6 is a two-position three-way valve, which comprises a second valve body 4.61, a second housing 4.62, a second valve core 4.63, a second guide sleeve 4.64, a second memory alloy spring 4.65, a third memory alloy spring 4.66, a second valve body spring 4.67, and a second push rod 4.68. The second guide sleeve 4.64 is connected to the inner side of the end of the second housing 4.62 away from the second valve body 4.61, and has an inner and outer sleeve body. The second memory alloy spring 4.65 is sleeved on the inner sleeve body, and the third memory alloy spring 4.66 is sleeved on the outer sleeve body. One end of the second push rod 4.68 is connected to the second valve core 4.63, and the other end is slidably arranged in the second guide sleeve 4.64. The second memory alloy spring 4.65 or the third memory alloy spring 4.66 can drive the second push rod 4.68 to push the second valve core 4.63 to shift. The second valve body 4.61 is provided with the second valve body spring 4.67 at both ends for resetting the second valve core 4.63.

[0041] The preset comfortable temperature T of the cab is in the range of T1<T<T2. In the initial position, the second valve body spring 4.67 makes the second valve core 4.63 in the left position. When the temperature is lower than T1, the second memory alloy spring 4.65 is deformed and elongated, and the second valve core 4.63 is switched to the right. When the temperature is greater than T2, the third memory alloy spring 4.66 is deformed and elongated, and the second valve core 4.63 is switched to the right.

[0042] As shown in Figures 1 to 3The structure and principle of the temperature regulating system are shown as follows: the first inner circulation water path between the engine body 1.1 and the inner circulation radiator 1.4 is sequentially provided with an inner circulation temperature sensor 1.81, a first two-position three-way reversing valve 1.82, a second two-position three-way reversing valve 1.83 and a single-temperature-control memory alloy reversing valve 1.9, and the second inner circulation water path between the inner circulation radiator 1.4 and the engine body 1.1 is sequentially provided with an inner circulation pump 1.6 and an inner circulation heat exchanger 1.10; the first outer circulation water path between the turbocharger 1.3 and the outer circulation radiator 1.5 is provided with an outer circulation temperature sensor 1.84 and a third two-position three-way reversing valve 1.85, and the second outer circulation water path between the outer circulation radiator 1.5 and the engine exhaust manifold 1.2 is provided with an outer circulation pump 1.7 and an outer circulation heat exchanger 1.11;

[0043] The a port of the first two-position three-way reversing valve 1.82 is connected with the a port of the second two-position three-way reversing valve 1.83, the b port is connected with the engine body 1.1 through the inner circulation temperature sensor 1.81, the c port is connected with the second two-position three-way reversing valve 1.83 and the single-temperature-control memory alloy reversing valve 1.9 through the intercooler 1.12, and the A port of the single-temperature-control memory alloy reversing valve 1.9 is connected on the second inner circulation water path between the inner circulation pump 1.6 and the inner circulation heat exchanger 1.10;

[0044] The b port of the second two-position three-way reversing valve 1.83 is connected with the P port of the single-temperature-control memory alloy reversing valve 1.9, the c port of the second two-position three-way reversing valve 1.83 is connected with the heat source pipe in the first generator 2.4 through the first air-controlled waste heat pump 1.13, the B port of the single-temperature-control memory alloy reversing valve 1.9 is connected with the inner circulation heat exchanger 1.10, and the other end of the heat source pipe in the first generator 2.4 is connected on the second inner circulation water path between the inner circulation pump 1.6 and the inner circulation heat exchanger 1.10;

[0045] The a port of the third two-position three-way reversing valve 1.85 is connected with the turbocharger 1.3 through the outer circulation temperature sensor 1.84, the b port is connected with the outer circulation radiator 1.5, the c port is connected with the heat source pipe in the second generator 2.5 through the second air-controlled waste heat pump 1.14, and the other end of the heat source pipe in the second generator 2.5 is connected on the second outer circulation water path between the outer circulation radiator 1.5 and the outer circulation pump 1.7;

[0046] When the ambient temperature sensor 1.89 detects that the outside temperature is low, the centralized controller 5 controls the b, c ports of the first two-position three-way directional valve 1.82 to be conductive, and the internal circulation water circuit passes through the intercooler 1.12 for heating of the intake system; the single-temperature control memory alloy directional valve 1.9 is in the initial state of the first valve core 1.93 being in the left position, and the P port is conductive with the B port; when the internal circulation temperature sensor 1.81 detects that the engine water temperature is low, the first memory alloy spring 1.95 of the single-temperature control memory alloy directional valve 1.9 is deformed and elongated, the first valve core 1.93 is pushed to the right position, and the P port is conductive with the A port, so that the internal circulation water circuit directly returns to the engine body without passing through the internal circulation radiator 1.4, for engine preheating.

[0047] The absorption cycle unit includes an absorber 2.1, a solution pump 2.2, a solution heat exchanger 2.3, a first generator 2.4, a second generator 2.5, and a waste heat generator, wherein the lithium bromide dilute solution is placed in the absorber 2.1, the dilute solution flowing out of the absorber 2.1 is pressurized by the solution pump 2.2, the pressurized dilute solution is warmed by the solution heat exchanger 2.3 and enters the first generator 2.4 and the second generator 2.5, the dilute solution is heated to boiling by the heat source pipe (heat source from the engine cooling water pipe and the engine exhaust water pipe) in the first generator 2.4 and the second generator 2.5, producing high-temperature and high-pressure coolant vapor and concentrated solution, wherein two streams of coolant vapor flow out of the first generator 2.4 and the second generator 2.5, merge through a two-position four-way directional valve 3, enter a condensation and evaporation unit, and finally flow back to the absorber 2.1 through the two-position four-way directional valve 3 again, the P port of the two-position four-way directional valve 3 is connected with the first generator 2.4 and the second generator 2.5, and the T port is connected with the absorber 2.1, and the concentrated solution flows out of the first generator 2.4 and the second generator 2.5 and flows back to the absorber 2.1 after being cooled by the solution heat exchanger 2.3;

[0048] When the internal circulation temperature sensor 1.81 and the external circulation temperature sensor 1.84 detect that the water temperature is high, the centralized controller 5 controls the a, c ports of the second two-position three-way directional valve 1.83 and the third two-position three-way directional valve 1.85 to be conductive, and controls the first gas-controlled waste heat pump 1.13, the second gas-controlled waste heat pump 1.14, and the solution pump 2.2 to work, and the first generator 2.4 and the second generator 2.5 heat the organic cycle solution by using the engine waste heat.

[0049] The condensing and evaporating unit comprises a first heat exchanger 4.1, a second heat exchanger 4.2 and a fan 4.3, the A port of the two-position four-way valve 3 is connected with the first end of the first heat exchanger 4.1 through the fourth two-position three-way valve 1.86, the second end of the first heat exchanger 4.1 is connected with the second heat exchanger 4.2 through the expansion valve 4.4, the three-position four-way valve 4.5 and the double-temperature control memory alloy valve 4.6, the fan 4.3 is arranged above the first heat exchanger 4.1 and the second heat exchanger 4.2 to accelerate air flow, the cab temperature sensor 1.88 and the environment temperature sensor 1.89 are arranged in and outside the cab respectively;

[0050] The a port of the three-position four-way valve 4.5 is connected with the expansion valve 4.4, the b port is connected with the P port of the double-temperature control memory alloy valve 4.6, the c port is connected with the B port of the two-position four-way valve 3, the d port is connected with the inner circulating heat exchanger 1.10 and the outer circulating heat exchanger 1.11 through the fifth two-position three-way valve 1.87, the A port of the double-temperature control memory alloy valve 4.6 is connected with the first end of the second heat exchanger 4.2, the B port of the double-temperature control memory alloy valve 4.6 is connected with the B port of the two-position four-way valve 3, the a port of the fifth two-position three-way valve 1.87 is connected with the d port of the three-position four-way valve 4.5, the b port is connected with the first end of the inner circulating heat exchanger 1.10, the c port is connected with the first end of the outer circulating heat exchanger 1.11, and the second ends of the inner circulating heat exchanger 1.10 and the outer circulating heat exchanger 1.11 are connected with the B port of the two-position four-way valve 3; the centralized controller 5 is used for receiving input signals of sensors and outputting control signals to the valves.

[0051] When the refrigeration effect is needed in the cab, the centralized controller 5 controls the two-position four-way valve 3 to be in the right position, at this time, the P port and the A port of the two-position four-way valve 3 are in conduction, the T port and the B port are in conduction, the high-temperature and high-pressure refrigerant vapor enters the first heat exchanger 4.1 (at this time, the first heat exchanger 4.1 is a condenser, and the refrigerant vapor is cooled to become liquid) through the a port and the b port of the fourth two-position three-way valve 1.86, then the liquid is cooled to become vapor in the second heat exchanger 4.2 (at this time, the second heat exchanger 4.2 is an evaporator) through the expansion valve 4.4, the a port and the b port of the three-position four-way valve 4.5 and the P port and the A port of the double-temperature control memory alloy valve 4.6, and the second heat exchanger 4.2 is arranged in the box 6.9 for supplying air to the cab, so that the temperature of the cab is reduced, thereby achieving the refrigeration purpose; when the temperature of the cab is lower than T1, the second memory alloy spring 4.65 of the double-temperature control memory alloy valve 4.6 is elongated, the double-temperature control memory alloy valve 4.6 is switched, the P port and the B port are in conduction, and the condensed liquid directly returns without passing through the second heat exchanger 4.2, so that the temperature of the cab is always kept in the normal range; the specific principle of the heat exchanger is the same as that of the air conditioner, and will not be repeated here.

[0052] When the internal circulation needs to achieve the refrigeration effect, auxiliary cooling: control the two-position four-way reversing valve 3 in the right position, the high temperature and high pressure refrigerant vapor through the fourth two-position three-way reversing valve 1.86 a, b into the first heat exchanger 4.1 (at this time, the condenser, refrigerant vapor heat into liquid), then through the expansion valve 4.4, three-position four-way reversing valve 4.5 a, d, fifth two-position three-way reversing valve 1.87 a, b and internal circulation heat exchanger 1.10 (at this time, the evaporator, liquid heat into steam), eventually back to the absorber 2.1, to achieve the purpose of auxiliary internal circulation cooling water;

[0053] When the external circulation needs to achieve the refrigeration effect, auxiliary cooling: control the two-position four-way reversing valve 3 in the right position, the high temperature and high pressure refrigerant vapor through the fourth two-position three-way reversing valve 1.86 a, b into the first heat exchanger 4.1 (at this time, the condenser, refrigerant vapor heat into liquid), then through the expansion valve 4.4, three-position four-way reversing valve 4.5 a, d, fifth two-position three-way reversing valve 1.87 a, c and external circulation heat exchanger 1.11 (at this time, the evaporator, liquid heat into steam), eventually back to the absorber 2.1, to achieve the purpose of auxiliary external circulation cooling water;

[0054] When the internal circulation needs to achieve the refrigeration effect, auxiliary cooling: control the two-position four-way reversing valve 3 in the right position, the high temperature and high pressure refrigerant vapor through the fourth two-position three-way reversing valve 1.86 a, b into the first heat exchanger 4.1 (at this time, the condenser, refrigerant vapor heat into liquid), then through the expansion valve 4.4, three-position four-way reversing valve 4.5 a, d, fifth two-position three-way reversing valve 1.87 a, b and internal circulation heat exchanger 1.10 (at this time, the evaporator, liquid heat into steam), eventually back to the absorber 2.1, to achieve the purpose of auxiliary internal circulation cooling water;

[0055] When the internal circulation needs to achieve the refrigeration effect, auxiliary cooling: control the two-position four-way reversing valve 3 in the right position, the high temperature and high pressure refrigerant vapor through the fourth two-position three-way reversing valve 1.86 a, b into the first heat exchanger 4.1 (at this time, the condenser, refrigerant vapor heat into liquid), then through the expansion valve 4.4, three-position four-way reversing valve 4.5 a, d, fifth two-position three-way reversing valve 1.87 a, b and internal circulation heat exchanger 1.10 (at this time, the evaporator, liquid heat into steam), eventually back to the absorber 2.1, to achieve the purpose of auxiliary internal circulation cooling water;

[0056] When the effect of neither refrigeration nor heating is needed: control the two-position four-way reversing valve 3 to be in the left or right position, the high-temperature and high-pressure refrigerant vapor of the fourth two-position three-way reversing valve 1.86 a, c port, the fifth two-position three-way reversing valve 1.87 a, c port directly backflow, achieve the effect of neither refrigeration nor heating.

[0057] As shown in Figure 13 , Figure 14 , the structure and principle of the defogging system of the present application: the cab defogging unit includes the air vent mounting plate 6.1, the air vent moving plate 6.2, the electric cylinder 6.3, the air inlet fairing 6.4, the guide pipe 6.5, the defogging dryer 6.6 and the warm air injection pipe 6.7; the second heat exchanger 4.2 and the fan 4.3 are placed in the box 6.9, the box 6.9 is communicated with the cab through the air vent, the air vent mounting plate 6.1 is placed at the air vent, the electric cylinder 6.3 drives the air vent moving plate 6.2 to cooperate or separate with the air vent mounting plate 6.1 to realize the closing or opening of the air vent, the heat flows through the air inlet fairing 6.4, is guided through the guide pipe 6.5, the defogging dryer 6.6 and the warm air injection pipe 6.7 to defog the windshield, the electric cylinder 6.3 is connected with the defogging electromagnetic valve 6.8, the defogging electromagnetic valve 6.8 is connected to the signal output end of the centralized controller 5, when the windshield has fog, the electric cylinder 6.3 drives the air vent moving plate 6.2 to cooperate with the air vent mounting plate 6.1 to close the air vent, closes the heating of the cab, and separately performs the defogging work. The warm air injection pipe 6.7 is fixed on the windshield by a vacuum chuck, the array of warm air injection holes on the warm air injection pipe 6.7 has a diameter of 5 mm, every 4 holes is a group, and the holes respectively form an angle of 5°, 15°, 25° and 35° with the plane of the windshield. The purpose of such arrangement is to inject hot air to different areas of the windshield to achieve the purpose of efficiently heating the windshield. The engine waste heat is used instead of resistance wire to produce heat to realize the removal of frost on the outside of the windshield and fog on the inside of the windshield, which has the advantages of safety during use, energy saving, simple structure, durable function and the like.

[0058] As shown in Figure 12 , compared with the electrical control, the gas circuit of the mine vehicle has more sufficient power, the gas circuit control system includes the air compressor 7.1, the gas storage tank 7.2, the total valve 7.3, the air treatment unit 7.4, the air pressure gauge 7.5, the gas circuit fluctuation valve 7.6 and the gas control electric switch 7.7 connected in sequence, the circuit unit connected with the centralized controller 5 includes the mine generator 8.1, the storage battery 8.2, the electric leakage locking switch 8.3, the circuit power switch 8.4 and the vehicle action electric control unit 8.5 connected in sequence, the gas control electric switch 7.7 is connected between the vehicle action electric control unit 8.5 and the centralized controller 5, after the total valve 7.3 controls the disconnection of the gas circuit, the gas circuit fluctuation valve 7.6 is de-energized and reset to drive the gas control electric switch 7.7 to be disconnected, and the power supply to the entire control system is completed.

[0059] The above description is only preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A temperature control system for the cab of a mining vehicle based on waste heat from the power unit, characterized in that: It includes an engine, an absorption cycle unit, a condensation and evaporation unit, and a central controller (5). The engine includes an engine block (1.1), an engine exhaust manifold (1.2), a turbocharger (1.3), an internal circulation radiator (1.4), and an external circulation radiator (1.5). The engine cooling water circuit includes an internal circulation water circuit and an external circulation water circuit. The internal circulation water circuit cools the engine block (1.1) through an internal circulation pump (1.6) and an internal circulation radiator (1.4). The external circulation water circuit reduces the temperature of the engine exhaust gas through an external circulation pump (1.7), an engine exhaust manifold (1.2), a turbocharger (1.3), and an external circulation radiator (1.5). The turbocharger (1.3) has a first cooling water channel (1.31) at the turbine end and a second cooling water channel (1.32) at the compressor end. The first cooling water channel (1.31) and the second cooling water channel (1.32) are used to cool the turbocharger (1.3). The first cooling water channel (1.31) and the second cooling water channel (1.32) are connected to the external circulation water circuit. An internal circulation temperature sensor (1.81), a first two-position three-way reversing valve (1.82), a second two-position three-way reversing valve (1.83), and a single-temperature-controlled memory alloy reversing valve (1.9) are sequentially installed on the first internal circulation water line between the engine block (1.1) and the internal circulation radiator (1.4). An internal circulation pump (1.6) and an internal circulation heat exchanger (1.10) are sequentially installed on the second internal circulation water line between the internal circulation radiator (1.4) and the engine block (1.1). An external circulation temperature sensor (1.84) and a third two-position three-way reversing valve (1.85) are installed on the first external circulation water line between the turbocharger (1.3) and the external circulation radiator (1.5). An external circulation pump (1.7) and an external circulation heat exchanger (1.11) are installed on the second external circulation water line between the external circulation radiator (1.5) and the engine exhaust manifold (1.2). Port a of the first two-position three-way reversing valve (1.82) is connected to port a of the second two-position three-way reversing valve (1.83). Port b is connected to the engine block (1.1) via the internal circulation temperature sensor (1.81). Port c is connected to the first internal circulation water circuit between the second two-position three-way reversing valve (1.83) and the single-temperature-controlled memory alloy reversing valve (1.9) via the intercooler (1.12). Port A of the single-temperature-controlled memory alloy reversing valve (1.9) is connected to the second internal circulation water circuit between the internal circulation pump (1.6) and the internal circulation heat exchanger (1.10). The b port of the second two-position three-way reversing valve (1.83) is connected to the P port of the single temperature-controlled memory alloy reversing valve (1.9). The c port of the second two-position three-way reversing valve (1.83) is connected to the heat source pipe in the first generator (2.4) via the first pneumatic waste heat pump (1.13). The B port of the single temperature-controlled memory alloy reversing valve (1.9) is connected to the internal circulation heat exchanger (1.10). The other end of the heat source pipe in the first generator (2.4) is connected to the second internal circulation water circuit between the internal circulation water pump (1.6) and the internal circulation heat exchanger (1.10). The third two-position three-way reversing valve (1.85) has port a connected to the turbocharger (1.3) via the external circulation temperature sensor (1.84), port b connected to the external circulation radiator (1.5), and port c connected to the heat source pipe in the second generator (2.5) via the second air-controlled waste heat pump (1.14). The other end of the heat source pipe in the second generator (2.5) is connected to the second external circulation water circuit between the external circulation radiator (1.5) and the external circulation pump (1.7). The absorption circulation unit includes an absorber (2.1), a solution pump (2.2), a solution heat exchanger (2.3), a first generator (2.4), a second generator (2.5), and a waste heat generator. The absorber (2.1) contains a dilute lithium bromide solution. The dilute solution flowing out of the absorber (2.1) is pressurized by the solution pump (2.2), and then heated by the solution heat exchanger (2.3) before entering the first generator (2.4) and the second generator (2.5). The dilute solution is heated to boiling by the heat source tubes in the first generator (2.4) and the second generator (2.5), generating high temperature. High-pressure refrigerant vapor and concentrated solution, two streams of refrigerant vapor flow out from the first generator (2.4) and the second generator (2.5) and then merge through a two-position four-way reversing valve (3) into the condensation and evaporation unit and finally flow back to the absorber (2.1) through the two-position four-way reversing valve (3). The P port of the two-position four-way reversing valve (3) is connected to the first generator (2.4) and the second generator (2.5), and the T port is connected to the absorber (2.1). The concentrated solution flows out from the first generator (2.4) and the second generator (2.5) and flows back to the absorber (2.1) after being cooled by the solution heat exchanger (2.3). The condensation and evaporation unit includes a first heat exchanger (4.1), a second heat exchanger (4.2), and a fan (4.3). The A port of the two-position four-way reversing valve (3) is connected to the first end of the first heat exchanger (4.1) via a fourth two-position three-way reversing valve (1.86). The second end of the first heat exchanger (4.1) is connected to the second heat exchanger (4.2) via an expansion valve (4.4), a three-position four-way reversing valve (4.5), and a dual-temperature-controlled memory alloy reversing valve (4.6). The fan (4.3) is placed above the first heat exchanger (4.1) and the second heat exchanger (4.2) to accelerate airflow. A cab temperature sensor (1.88) and an ambient temperature sensor (1.89) are respectively installed inside and outside the cab. Port a of the three-position four-way directional valve (4.5) is connected to the expansion valve (4.4), port b is connected to the P port of the dual-temperature-controlled shape memory alloy directional valve (4.6), port c is connected to the B port of the two-position four-way directional valve (3), and port d is connected to the internal circulation heat exchanger (1.10) and the external circulation heat exchanger (1.11) respectively via the fifth two-position three-way directional valve (1.87). Port A of the dual-temperature-controlled shape memory alloy directional valve (4.6) is connected to the first end of the second heat exchanger (4.2). Port B of the shape memory alloy reversing valve (4.6) is connected to port B of the two-position four-way reversing valve (3); port a of the fifth two-position three-way reversing valve (1.87) is connected to port d of the three-position four-way reversing valve (4.5), port b is connected to the first end of the internal circulation heat exchanger (1.10), port c is connected to the first end of the external circulation heat exchanger (1.11), and the second ends of both the internal circulation heat exchanger (1.10) and the external circulation heat exchanger (1.11) are connected to port B of the two-position four-way reversing valve (3); The centralized controller (5) is used to receive input signals from the sensors and output control signals to the reversing valve.

2. The temperature control system for the cab of a mining vehicle based on waste heat from a power unit according to claim 1, characterized in that: The single-temperature-controlled memory alloy reversing valve (1.9) includes a first valve body (1.91), a first housing (1.92), a first valve core (1.93), a first guide sleeve (1.94), a first memory alloy spring (1.95), a first valve body spring (1.96), and a first push rod (9.7). The first guide sleeve (1.94) is connected to the inner side of the end of the first housing (1.92) away from the first valve body (1.91). The first memory alloy spring (1.95) is sleeved on the outer side of the first guide sleeve (1.94). One end of the first push rod (9.7) is connected to the first valve core (1.93), and the other end is slidably disposed in the first guide sleeve (1.94). The deformation of the first memory alloy spring (1.95) can drive the first push rod (9.7) to push the first valve core (1.93) to move. The first valve body (1.91) is provided with a first valve body spring (1.96) at both ends for resetting the first valve core (1.93).

3. The temperature control system for the cab of a mining vehicle based on waste heat from a power unit according to claim 1, characterized in that: The dual-temperature-controlled shape memory alloy reversing valve (4.6) includes a second valve body (4.61), a second housing (4.62), a second valve core (4.63), a second guide sleeve (4.64), a second shape memory alloy spring (4.65), a third shape memory alloy spring (4.66), a second valve body spring (4.67), and a second push rod (4.68). The second guide sleeve (4.64) is connected to the inner side of the end of the second housing (4.62) away from the second valve body (4.61). The second guide sleeve (4.64) has inner and outer sleeves, wherein the second shape memory alloy... Spring (4.65) is sleeved on the inner sleeve, and third memory alloy spring (4.66) is sleeved on the outer sleeve. One end of the second push rod (4.68) is connected to the second valve core (4.63), and the other end is slidably disposed in the second guide sleeve (4.64). The deformation of the second memory alloy spring (4.65) or the third memory alloy spring (4.66) can drive the second push rod (4.68) to push the second valve core (4.63) to move. The two ends of the second valve body (4.61) are provided with second valve body springs (4.67) for resetting the second valve core (4.63).

4. A mining vehicle cab temperature control system based on waste heat from the power unit according to claim 1, characterized in that: The coolant in the first cooling channel (1.31) flows in the opposite direction to the impeller at the turbine end of the turbocharger (1.3), and the coolant in the second cooling channel (1.32) flows in the opposite direction to the impeller at the compressor end of the turbocharger (1.3); an internal circulation check valve (1.16) is provided between the internal circulation radiator (1.4) and the internal circulation pump (1.6), and an external circulation check valve (1.17) is provided between the external circulation radiator (1.5) and the external circulation pump (1.7).

5. A mining vehicle cab temperature control system based on waste heat from the power unit as described in claim 1, characterized in that: The second heat exchanger (4.2) and fan (4.3) are housed in the housing (6.9), which also includes a cab defogging unit. The cab defogging unit includes a vent mounting plate (6.1), a vent moving plate (6.2), an electric cylinder (6.3), an air intake shroud (6.4), a guide pipe (6.5), a defogging dryer (6.6), and a warm air jet pipe (6.7). The housing (6.9) is connected to the cab via a vent, and the vent mounting plate (6.1) is placed in the vent... At the opening, the electric cylinder (6.3) drives the vent moving plate (6.2) to cooperate or separate from the vent mounting plate (6.1) to close or open the vent. The hot air is guided by the air intake guide hood (6.4) and defogs the windshield through the guide pipe (6.5), the defogging dryer (6.6) and the warm air jet pipe (6.7). The electric cylinder (6.3) is connected to the defogging solenoid valve (6.8), which is connected to the signal output terminal of the central controller (5).

6. A mining vehicle cab temperature control system based on waste heat from the power unit as described in claim 1, characterized in that: It also includes an air circuit control system, which includes an air compressor (7.1), an air tank (7.2), a main valve (7.3), an air handling unit (7.4), a pressure gauge (7.5), an air circuit fluctuation valve (7.6), and an air control switch (7.7) connected in sequence. The circuit unit for connecting to the central controller (5) includes a mining generator (8.1), a storage battery (8.2), a leakage current interlock switch (8.3), a circuit power switch (8.4), and a vehicle motion control unit (8.5) connected in sequence. The air control switch (7.7) is connected between the vehicle motion control unit (8.5) and the central controller (5).

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