Centralized fluid supply system for automobile assembly workshop

Abstract

The present invention proposes a centralized fluid supply system for automobile assembly workshops, including a controller, a brake fluid subsystem, a coolant subsystem and a refrigerant subsystem, wherein the controller brake fluid control output end is connected to the brake fluid subsystem control input end, the controller coolant control output end is connected to the coolant subsystem control input end, and the controller refrigerant control output end is connected to the refrigerant subsystem control input end. It can simultaneously transport multiple liquids such as brake fluid, coolant and refrigerant, and the transport pipelines of each liquid will not affect each other, and they can be transported separately, so the system is stable and the working efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of material conveying, and in particular to a centralized liquid supply system in an automobile assembly workshop. Background Art

[0002] The centralized liquid supply system can provide long-distance transportation according to user needs, and transport the liquid from the liquid storage tank to the user's designated use location at a certain pressure and flow rate. It is generally used in various filling equipment in the assembly workshop, the vehicle filling point of the assembly workshop, etc. The conveying medium includes fuel (gasoline, diesel), brake fluid, refrigerant, engine oil, transmission oil, gear oil, power steering fluid and many other different liquids. Therefore, a centralized liquid supply system that can stably transport various liquids is urgently needed. Summary of the invention

[0003] The present invention aims to at least solve the technical problems existing in the prior art, and in particular innovatively proposes a centralized liquid supply system for an automobile assembly workshop, which can stably transport a variety of different liquids.

[0004] In order to achieve the above-mentioned purpose of the present invention, the present invention provides a centralized fluid supply system for an automobile assembly workshop, including a controller, a brake fluid subsystem, a coolant subsystem and a refrigerant subsystem, wherein the brake fluid control output end of the controller is connected to the brake fluid subsystem control input end, the coolant control output end of the controller is connected to the coolant subsystem control input end, and the refrigerant control output end of the controller is connected to the refrigerant subsystem control input end.

[0005] In the above scheme: the brake fluid subsystem includes a first brake fluid reservoir tank, a first brake fluid suction pump is provided in the first brake fluid reservoir tank, the first brake fluid suction pump is connected to a brake fluid suction hose, the other end of the brake fluid suction hose is connected to a material inlet of a first brake fluid electromagnetic angle seat valve, a signal input end of the first brake fluid electromagnetic angle seat valve is connected to a signal output end of a first brake fluid reservoir valve of a controller; a material outlet of the first brake fluid electromagnetic angle seat valve is connected to a material inlet of a first brake fluid infusion pump, a material outlet of the first brake fluid infusion pump is connected to a material inlet of a brake fluid supply terminal valve through a brake fluid infusion pipe, a brake fluid pressure detector is provided on the brake fluid infusion pipe, a signal output end of the brake fluid pressure detector is connected to a brake fluid pressure signal input end of the controller, and a material outlet of the brake fluid supply terminal valve is connected to a brake fluid filling machine;

[0006] The first brake fluid infusion pump is a pneumatic diaphragm pump, the driving air input end of the first brake fluid infusion pump is connected to one end of the first brake fluid air supply branch pipe, the other end of the first brake fluid air supply branch pipe is connected to the end of the brake fluid air supply main pipe, and the starting end of the brake fluid air supply main pipe is connected to the compressed air pipe; a brake fluid pneumatic triplet, a brake fluid pump solenoid valve and a brake fluid anti-air strike protector are arranged in sequence along the air flow direction on the brake fluid air supply main pipe.

[0007] In the above scheme: the brake fluid subsystem is also equipped with a second brake fluid reservoir, a second brake fluid suction pump is arranged in the second brake fluid reservoir, the second brake fluid suction pump is also connected to the second brake fluid electromagnetic angle seat valve through a brake fluid suction hose, and the second brake fluid electromagnetic angle seat valve is connected to the beginning of the brake fluid supply pipe; the signal input end of the second brake fluid electromagnetic angle seat valve is connected to the signal output end of the second brake fluid reservoir valve of the controller; a brake fluid flow detector is arranged on the brake fluid supply pipe, and the signal output end of the brake fluid flow detector is connected to the brake fluid flow signal input end of the controller; wherein the first brake fluid reservoir and the second brake fluid reservoir are installed as one for use and one for backup;

[0008] The brake fluid subsystem also includes a brake fluid barrel-changing sound and light alarm, and a signal input end of the brake fluid barrel-changing sound and light alarm is connected to a brake fluid alarm signal output end of the controller.

[0009] In the above solution: the vents of the first brake fluid reservoir tank and the second brake fluid reservoir tank are both provided with drying cylinders.

[0010] In the above scheme: the coolant subsystem includes a coolant unloading unit and a coolant station area delivery unit;

[0011] The coolant unloading unit includes a coolant liquid delivery subunit and a coolant gas recovery subunit;

[0012] The coolant liquid conveying subunit includes a coolant unloading joint, and is connected to a coolant tank truck through a material inlet of the coolant unloading joint, the material outlet of the coolant unloading joint is connected to a material inlet of a first coolant electromagnetic angle seat valve, and a signal input end of the first coolant electromagnetic angle seat valve is connected to a coolant unloading signal output end of a controller; the material outlet of the first coolant electromagnetic angle seat valve is connected to a material inlet of a first coolant unloading pump through a coolant station area delivery main pipe, a coolant unloading flow detector is provided on the coolant station area delivery main pipe, a signal output end of the coolant unloading flow detector is connected to a coolant unloading signal input end of the controller, the material outlet of the first coolant unloading pump is connected to two coolant stainless steel storage tanks through two coolant station area delivery branches, coolant level gauges are provided in the two coolant stainless steel storage tanks, and a coolant level gauge signal output end is connected to a coolant level signal input end of the controller;

[0013] The first coolant unloading pump is a pneumatic diaphragm pump, the driving air input end of the first coolant unloading pump is connected to one end of the first coolant unloading gas supply branch pipe, the other end of the first coolant unloading gas supply branch pipe is connected to the end of the coolant unloading gas supply main pipe, and the starting end of the coolant unloading gas supply main pipe is connected to the compressed air pipe; the coolant unloading gas supply main pipe is provided with a coolant unloading pneumatic triplet, a coolant unloading pump solenoid valve and a coolant unloading anti-air strike protector in sequence along the air flow direction; the coolant unloading pump solenoid valve signal input end is connected to the controller coolant station area pump drive signal output end.

[0014] In the above scheme: the coolant gas recovery subunit includes a coolant gas recovery pipe connected to the tops of the two coolant stainless steel storage tanks, the other end of the coolant gas recovery pipe is connected to the material inlet of the second coolant electromagnetic angle seat valve, and the signal input end of the second coolant electromagnetic angle seat valve is connected to the coolant recovery signal output end of the controller; the material outlet of the second coolant electromagnetic angle seat valve is connected to the coolant gas recovery connector, and is connected to the coolant gas inlet of the coolant tank truck through the coolant gas recovery connector.

[0015] The coolant gas recovery subunit is used to recover the coolant that evaporates into gaseous form into the coolant tanker for recycling, thereby reducing the loss of coolant and preventing the gas formed by the coolant from leaking into the air, thereby avoiding environmental pollution.

[0016] In the above scheme: the coolant station area delivery unit includes a coolant infusion pipe whose starting end is connected to the infusion ports at the bottom of the two coolant stainless steel storage tanks, the end of the coolant infusion pipe is connected to the material inlet of the first coolant infusion pump, the material outlet of the first coolant infusion pump is connected to the material inlet of the third coolant electromagnetic angle seat valve through the coolant station area delivery pipe, the material outlet of the third coolant electromagnetic angle seat valve is connected to the coolant filling machine, and the signal input end of the third coolant electromagnetic angle seat valve is connected to the coolant filling signal output end of the controller; a coolant station area delivery pressure detector is provided on the coolant station area delivery pipe, and the signal output end of the coolant station area delivery pressure detector is connected to the coolant station area delivery pressure signal input end of the controller, and the coolant station area delivery pipe pressure detector is used to monitor the coolant station area delivery pipe pressure in real time;

[0017] The first coolant infusion pump is a pneumatic diaphragm pump, the driving gas input end of the first coolant infusion pump is connected to one end of the first coolant station area gas supply branch pipe, the other end of the first coolant station area gas supply branch pipe is connected to the end of the coolant station area gas supply main pipe, and the starting end of the coolant station area gas supply main pipe is connected to the compressed air pipe; the coolant station area gas supply main pipe is provided with a coolant pneumatic triplet, a coolant infusion pump solenoid valve and a coolant air strike protector in sequence along the air flow direction; the coolant infusion pump solenoid valve signal input end is connected to the controller coolant station area pump drive signal output end.

[0018] In the above scheme: the coolant subsystem also includes a coolant standby delivery unit, the coolant standby delivery unit includes a first coolant standby storage tank, the first coolant standby storage tank is provided with a first coolant suction pump, the first coolant suction pump is connected to a coolant suction hose, the other end of the coolant suction hose is connected to a material inlet of a fourth coolant electromagnetic angle seat valve, the signal input end of the fourth coolant electromagnetic angle seat valve is connected to a signal output end of the first coolant standby storage valve of the controller, the material outlet of the fourth coolant electromagnetic angle seat valve is connected to the starting end of the coolant standby storage main pipe through the first coolant standby storage branch pipe, the end of the coolant standby storage main pipe is connected to the material inlet of the first coolant standby infusion pump, and the material outlet of the first coolant standby infusion pump is connected to the material inlet of the third coolant electromagnetic angle seat valve;

[0019] The first coolant standby infusion pump is a pneumatic diaphragm pump, the driving gas input end of the first coolant standby infusion pump is connected to one end of the first coolant standby gas transmission branch pipe, the other end of the first coolant standby gas transmission branch pipe is connected to the end of the coolant standby gas transmission main pipe, and the starting end of the coolant standby gas transmission main pipe is connected to the compressed air pipe; the coolant standby gas transmission main pipe is provided with a coolant standby pneumatic triplet, a coolant standby infusion pump solenoid valve and a coolant standby air strike protector in sequence along the air flow direction; the coolant standby infusion pump solenoid valve signal input end is connected to the coolant standby pump drive signal output end of the controller.

[0020] In the above scheme: the refrigerant subsystem includes a first refrigerant cylinder, a first cylinder scale is provided at the bottom of the first refrigerant cylinder, a signal output end of the first cylinder scale is connected to the first cylinder weight signal input end of the controller, the first refrigerant cylinder is connected to one end of the first refrigerant liquid supply branch pipe, a first refrigerant electromagnetic angle seat valve is provided on the first refrigerant liquid supply branch pipe, and the signal input end of the first refrigerant electromagnetic angle seat valve is connected to the signal output end of the first refrigerant valve of the controller; the other end of the first refrigerant liquid supply branch pipe is connected to one end of the refrigerant liquid supply main pipe, the other end of the refrigerant liquid supply main pipe is connected to the material inlet of the first plunger pump, the material outlet of the first plunger pump is connected to the material inlet of the third refrigerant electromagnetic angle seat valve through the refrigerant delivery main pipe, a second refrigerant pressure sensor is provided on the refrigerant delivery main pipe, the signal output end of the second refrigerant pressure sensor is connected to the refrigerant terminal pressure sensor signal input end of the controller, and the third refrigerant electromagnetic angle seat valve is connected to the refrigerant filling machine inlet; the other end of the refrigerant liquid supply main pipe is connected to the material inlet of the refrigerant overpressure drain valve, and the material outlet of the refrigerant overpressure drain valve is connected to the material inlet end of the refrigerant delivery main pipe;

[0021] The first plunger pump is a pneumatic plunger pump, the driving gas input end of the first plunger pump is connected to one end of the first refrigerant gas branch pipe, the other end of the first refrigerant gas branch pipe is connected to the end of the refrigerant gas main pipe, and the starting end of the refrigerant gas main pipe is connected to the compressed air pipe; a refrigerant pneumatic triplet, a refrigerant solenoid valve and a refrigerant air strike protector are sequentially arranged on the refrigerant gas main pipe along the airflow direction.

[0022] In the above scheme: the refrigerant subsystem includes a second refrigerant steel cylinder, a second steel cylinder scale is provided at the bottom of the second refrigerant steel cylinder, a signal output end of the second steel cylinder scale is connected to a weight signal input end of the controller for the second steel cylinder, the second refrigerant steel cylinder is connected to one end of a second refrigerant liquid supply branch pipe, a second refrigerant electromagnetic angle seat valve is provided on the second refrigerant liquid supply branch pipe, and a signal input end of the second refrigerant electromagnetic angle seat valve is connected to a signal output end of the valve of the second refrigerant steel cylinder of the controller; the other end of the second refrigerant liquid supply branch pipe is also connected to one end of the refrigerant liquid supply main pipe; and the first refrigerant steel cylinder and the second refrigerant steel cylinder are arranged in one for use and one for backup;

[0023] The refrigerant subsystem also includes a refrigerant barrel change sound and light alarm, and a signal input end of the refrigerant barrel change sound and light alarm is connected to a refrigerant alarm signal output end of the controller.

[0024] In summary, due to the adoption of the above technical scheme, the beneficial effects of the present invention are: it can simultaneously transport multiple liquids such as brake fluid, coolant and refrigerant, and the delivery pipelines of each liquid will not affect each other, and they are transported separately, the system is stable, and the working efficiency is high.

[0025] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0027] Figure 1 is a system diagram of the present invention;

[0028] Figure 2 is a schematic diagram of the structure of the brake fluid subsystem of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the refrigerant subsystem of the present invention;

[0030] Figure 4 It is a schematic diagram of the structure of the cooling liquid subsystem of the present invention;

[0031] Figure 5 It is a schematic diagram of the structure of the windshield cleaning fluid subsystem of the present invention. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] like Figure 1-Figure 5As shown, the centralized fluid supply system of the automobile assembly workshop includes a controller, a brake fluid subsystem, a coolant subsystem and a refrigerant subsystem. The brake fluid control output end of the controller is connected to the brake fluid subsystem control input end, the coolant control output end of the controller is connected to the coolant subsystem control input end, and the refrigerant control output end of the controller is connected to the refrigerant subsystem control input end.

[0034] The brake fluid subsystem includes a first brake fluid reservoir 101a, in which a first brake fluid suction pump 102a is provided. The first brake fluid suction pump 102a is connected to a brake fluid suction hose, and the other end of the brake fluid suction hose is connected to a material inlet of a first brake fluid electromagnetic angle seat valve 104a, and a signal input end of the first brake fluid electromagnetic angle seat valve 104a is connected to a signal output end of a controller first brake fluid reservoir valve. The material outlet of the first brake fluid electromagnetic angle seat valve 104a is connected to a material inlet of a first brake fluid infusion pump 106a, and the material outlet of the first brake fluid infusion pump 106a is connected to a material inlet of a brake fluid supply terminal valve 108 through a brake fluid infusion pipe, and a brake fluid pressure detector 107 is provided on the brake fluid infusion pipe, and a signal output end of the brake fluid pressure detector 107 is connected to a brake fluid pressure signal input end of the controller, and a material outlet of the brake fluid supply terminal valve 108 is connected to a brake fluid filling machine.

[0035] Preferably, the first brake fluid infusion pump 106a is a pneumatic diaphragm pump, the driving air input end of the first brake fluid infusion pump 106a is connected to one end of the first brake fluid air delivery branch pipe, the other end of the first brake fluid air delivery branch pipe is connected to the end of the brake fluid air delivery main pipe, and the beginning of the brake fluid air delivery main pipe is connected to the compressed air pipe. The brake fluid pneumatic triplet 111, the brake fluid pump solenoid valve 110 and the brake fluid anti-runaway protector 109 are arranged in sequence along the air flow direction on the brake fluid air delivery main pipe.

[0036] When the brake fluid needs to be delivered, the controller sends a delivery start instruction to the brake fluid subsystem, and sends a connection instruction to the first brake fluid electromagnetic angle seat valve 104a to connect the first brake fluid reservoir 101a with the brake fluid infusion pipe. The controller sends a connection instruction to the brake fluid pump electromagnetic valve 110 to connect the brake fluid gas delivery pipe with the compressed air pipe, so that the compressed air in the compressed air pipe is delivered to the first brake fluid infusion pump 106a through the brake fluid gas delivery pipe, and enters from the driving air input end of the first brake fluid infusion pump 106a, and opens the first brake fluid infusion pump 106a through the air pressure of the compressed air, and provides pressure for the brake fluid through the first brake fluid infusion pump 106a, and pumps the brake fluid in the first brake fluid reservoir 101a to the brake fluid filling port.

[0037] Preferably, the brake fluid subsystem is also equipped with a second brake fluid reservoir 101b, in which a second brake fluid suction pump 102b is provided, and the second brake fluid suction pump 102b is also connected to a second brake fluid electromagnetic angle seat valve 104b through a brake fluid suction hose, and the second brake fluid electromagnetic angle seat valve 104b is connected to the beginning of the brake fluid supply pipe. The signal input end of the second brake fluid electromagnetic angle seat valve 104b is connected to the signal output end of the controller's second brake fluid reservoir valve. A brake fluid flow detector 105 is provided on the brake fluid supply pipe, and the signal output end of the brake fluid flow detector 105 is connected to the controller's brake fluid flow signal input end. Among them, the first brake fluid reservoir 101a and the second brake fluid reservoir 101b are installed as one for use and one for backup.

[0038] Preferably, the brake fluid subsystem also includes a brake fluid barrel change sound and light alarm, and the signal input end of the brake fluid barrel change sound and light alarm is connected to the controller brake fluid alarm signal output end.

[0039] When the detection signal of the brake fluid flow detector 105 is less than the set value, the controller immediately closes the first brake fluid electromagnetic angle seat valve 104a, opens the second brake fluid electromagnetic angle seat valve 104b, and sends an alarm command to the brake fluid barrel change sound and light alarm, and sends a brake fluid barrel change sound and light alarm signal through the brake fluid barrel change sound and light alarm; when the brake fluid flow detector 105 once again detects that the pipeline fluid is interrupted, the second brake fluid electromagnetic angle seat valve 104b is immediately closed, the first brake fluid electromagnetic angle seat valve 104a is opened, and an alarm command is sent to the brake fluid barrel change sound and light alarm, and a brake fluid barrel change sound and light alarm signal is sent through the brake fluid barrel change sound and light alarm; and the cycle is repeated.

[0040] Preferably, a drying cylinder 103 is provided on the vents of the first brake fluid reservoir tank 101a and the second brake fluid reservoir tank 101b.

[0041] Preferably, the first brake fluid infusion pump 106a is also connected in parallel with the second brake fluid infusion pump 106b, and the first brake fluid infusion pump 106a and the second brake fluid infusion pump 106b are installed as one for use and one for backup. Preferably, the material inlet, material outlet and driving gas input end of the first brake fluid infusion pump 106a are all provided with manual valves, and the material inlet, material outlet and driving gas input end of the second brake fluid infusion pump 106b are also all provided with manual valves. When the first brake fluid infusion pump 106a fails, the material inlet, material outlet and driving gas input end of the first brake fluid infusion pump 106a are cut off by the manual valve, and the material inlet, material outlet and driving gas input end of the second brake fluid infusion pump 106b are connected, so as to realize the switching of the first brake fluid infusion pump 106a and the second brake fluid infusion pump 106b.

[0042] The second brake fluid infusion pump 106b is a pneumatic diaphragm pump, the driving air input end of the second brake fluid infusion pump 106b is connected to one end of the second brake fluid air supply branch pipe, and the other end of the second brake fluid air supply branch pipe is connected to the end of the brake fluid air supply main pipe.

[0043] The coolant subsystem includes a coolant unloading unit and a coolant station area delivery unit. The coolant unloading unit is used to transfer the coolant in the coolant tanker to the two coolant stainless steel storage tanks 305. The coolant station area delivery unit is used to deliver the coolant in the two coolant stainless steel storage tanks 305 to the coolant filling machine.

[0044] The coolant unloading unit includes a coolant liquid delivery subunit and a coolant gas recovery subunit. The coolant liquid delivery subunit is used to transfer the coolant liquid in the coolant tanker to the two coolant stainless steel storage tanks 305. The coolant gas recovery subunit is used to deliver the coolant gas in the two coolant stainless steel storage tanks 305 to the coolant tanker.

[0045] The coolant liquid delivery subunit includes a coolant unloading joint 301, and is connected to a coolant tank truck through the material inlet of the coolant unloading joint 301. The material outlet of the coolant unloading joint 301 is connected to the material inlet of the first coolant electromagnetic angle seat valve 302, and the signal input end of the first coolant electromagnetic angle seat valve 302 is connected to the coolant unloading signal output end of the controller. The material outlet of the first coolant electromagnetic angle seat valve 302 is connected to the material inlet of the first coolant unloading pump 304a through the coolant station area delivery main pipe. The coolant station area delivery main pipe is provided with a coolant unloading flow detector 303, and the signal output end of the coolant unloading flow detector 303 is connected to the coolant unloading signal input end of the controller. The material outlet of the first coolant unloading pump 304a is connected to two coolant stainless steel storage tanks 305 through two coolant station area delivery branches, and both of the coolant stainless steel storage tanks 305 are provided with coolant level gauges. The signal output end of the coolant level meter is connected to the coolant level signal input end of the controller. When the coolant level meter detects that the coolant in the coolant stainless steel storage tank 305 is less than the set value, the controller drives the first coolant electromagnetic angle seat valve 302 to connect, and the controller sends a start unloading instruction to the coolant unloading unit to transfer the coolant in the refrigerant tank truck to the two coolant stainless steel storage tanks 305. At the same time, the controller sends a stop delivery instruction to the coolant station area delivery unit. When the coolant level meter detects that the coolant in the coolant stainless steel storage tank 305 is less than the set value, the controller drives the first coolant electromagnetic angle seat valve 302 to block, and the controller sends a stop unloading instruction to the coolant unloading unit to stop transferring the coolant in the refrigerant tank truck to the two coolant stainless steel storage tanks 305. At the same time, the controller sends a start delivery instruction to the coolant station area delivery unit. Preferably, the end of the coolant station area delivery branch pipe extends into the bottom of the coolant stainless steel storage tank 305.

[0046] Preferably, the first coolant unloading pump 304a is a pneumatic diaphragm pump, the driving air input end of the first coolant unloading pump 304a is connected to one end of the first coolant unloading gas delivery branch pipe, the other end of the first coolant unloading gas delivery branch pipe is connected to the end of the coolant unloading gas delivery main pipe, and the beginning of the coolant unloading gas delivery main pipe is connected to the compressed air pipe. The coolant unloading gas delivery main pipe is provided with a coolant unloading pneumatic triplet 306, a coolant unloading pump solenoid valve 307 and a coolant unloading anti-air strike protector 308 in sequence along the air flow direction. The signal input end of the coolant unloading pump solenoid valve 307 is connected to the controller coolant station area pump drive signal output end.

[0047] When it is necessary to unload the coolant, the controller sends a stop delivery instruction to the coolant station area delivery unit. At the same time, the controller sends a start unloading instruction to the coolant station area delivery unit. The controller sends a connection instruction to the coolant unloading pump solenoid valve 307 to connect the coolant unloading gas main pipe with the compressed air pipe, so that the compression control in the compressed air pipe is transported to the first coolant unloading pump 304a through the coolant unloading gas main pipe, and enters from the driving air input end of the first coolant unloading pump 304a. The first coolant unloading pump 304a is opened by the air pressure of the compressed air, and pressure is provided for the coolant through the first coolant unloading pump 304a, and the coolant is pumped into two coolant stainless steel storage tanks 305.

[0048] Preferably, the first coolant unloading pump 304a is connected in parallel with the second coolant unloading pump 304b. Preferably, the second coolant unloading pump 304b is also a pneumatic diaphragm pump, and the driving gas input end of the second coolant unloading pump 304b is connected to one end of the second coolant unloading gas supply branch pipe, and the other end of the second coolant unloading gas supply branch pipe is connected to the end of the coolant unloading gas supply main pipe.

[0049] The first coolant unloading pump 304a and the second coolant unloading pump 304b are installed in a standby manner, and the material inlet, material outlet and driving gas input end of the first coolant unloading pump 304a are all provided with manual valves, and the material inlet, material outlet and driving gas input end of the second coolant unloading pump 304b are also provided with manual valves. When the first coolant unloading pump 304a fails, the material inlet, material outlet and driving gas input end of the first coolant unloading pump 304a are cut off by the manual valve, and the material inlet, material outlet and driving gas input end of the second coolant unloading pump 304b are connected, so as to realize the switching of the first coolant unloading pump 304a and the second coolant unloading pump 304b.

[0050] The coolant gas recovery subunit includes a coolant gas recovery pipe connected to the top of the two coolant stainless steel storage tanks 305, the other end of the coolant gas recovery pipe is connected to the material inlet of the second coolant electromagnetic angle seat valve 316, and the signal input end of the second coolant electromagnetic angle seat valve 316 is connected to the coolant recovery signal output end of the controller. The material outlet of the second coolant electromagnetic angle seat valve 316 is connected to the coolant gas recovery connector 315, and is connected to the coolant gas inlet of the coolant tank truck through the coolant gas recovery connector 315. The coolant gas recovery subunit is used to recover the coolant that evaporates to form a gaseous state into the coolant tank truck for recycling, thereby reducing the loss of coolant and also preventing the gas formed by the coolant from leaking into the air to avoid environmental pollution.

[0051] The cooling liquid station area delivery unit includes a cooling liquid infusion pipe whose starting end is connected to the infusion ports at the bottom of the two cooling liquid stainless steel storage tanks 305, and the end of the cooling liquid infusion pipe is connected to the material inlet of the first cooling liquid infusion pump 309a, and the material outlet of the first cooling liquid infusion pump 309a is connected to the material inlet of the third cooling liquid electromagnetic angle seat valve 311 through the cooling liquid station area delivery pipe, and the material outlet of the third cooling liquid electromagnetic angle seat valve 311 is connected to the cooling liquid filling machine, and the signal input end of the third cooling liquid electromagnetic angle seat valve 311 is connected to the cooling liquid filling signal output end of the controller. A cooling liquid station area delivery pressure detector 310 is provided on the cooling liquid station area delivery pipe, and the signal output end of the cooling liquid station area delivery pressure detector 310 is connected to the cooling liquid station area delivery pressure signal input end of the controller, and the cooling liquid station area delivery pipe pressure detector 310 is used to monitor the cooling liquid station area delivery pipe pressure in real time.

[0052] Preferably, the first coolant infusion pump 309a is a pneumatic diaphragm pump, the driving gas input end of the first coolant infusion pump 309a is connected to one end of the first coolant station area gas delivery branch pipe, the other end of the first coolant station area gas delivery branch pipe is connected to the end of the coolant station area gas delivery main pipe, and the beginning of the coolant station area gas delivery main pipe is connected to the compressed air pipe. The coolant station area gas delivery main pipe is provided with a coolant pneumatic triplet 312, a coolant infusion pump solenoid valve 313 and a coolant anti-air strike protector 314 in sequence along the air flow direction. The signal input end of the coolant infusion pump solenoid valve 313 is connected to the controller coolant station area pump drive signal output end.

[0053] When it is necessary to transport the coolant in the station area, the controller sends a stop transport instruction to the coolant standby transport unit, the controller sends a start transport instruction to the coolant station area transport unit, and the controller sends a connection instruction to the coolant infusion pump solenoid valve 313 to connect the coolant station area gas delivery main with the compressed air pipe, so that the compression control in the compressed air pipe is transported to the first coolant infusion pump 309a through the coolant station area gas delivery main pipe, and enters from the driving air input end of the first coolant infusion pump 309a, and the first coolant infusion pump 309a is opened by the air pressure of the compressed air, and the first coolant infusion pump 309a provides pressure for the coolant, and the coolant in the two coolant stainless steel storage tanks 305 is pumped to the coolant filling port.

[0054] Preferably, the first coolant infusion pump 309a is connected in parallel with the second coolant infusion pump 309b. Preferably, the second coolant infusion pump 309b is also a pneumatic diaphragm pump, and the driving gas input end of the second coolant infusion pump 309b is connected to one end of the second coolant gas delivery branch pipe, and the other end of the second coolant gas delivery branch pipe is connected to the end of the coolant gas delivery main pipe.

[0055] The first coolant infusion pump 309a and the second coolant infusion pump 309b are installed one for use and one for backup. The material inlet, material outlet and driving gas input end of the first coolant infusion pump 309a are all provided with manual valves, and the material inlet, material outlet and driving gas input end of the second coolant infusion pump 309b are also provided with manual valves. When the first coolant infusion pump 309a fails, the material inlet, material outlet and driving gas input end of the first coolant infusion pump 309a are cut off by the manual valve, and the material inlet, material outlet and driving gas input end of the second coolant infusion pump 309b are connected, so as to realize the switching of the first coolant infusion pump 309a and the second coolant infusion pump 309b.

[0056] The coolant subsystem also includes a coolant standby delivery unit, which is used to continue delivering coolant to the coolant filling machine when the coolant station delivery unit fails to work.

[0057] The coolant standby delivery unit includes a first coolant standby storage tank 401a, in which a first coolant suction pump 402a is arranged, the first coolant suction pump 402a is connected to a coolant suction hose, the other end of the coolant suction hose is connected to a material inlet of a fourth coolant electromagnetic angle seat valve 403a, a signal input end of the fourth coolant electromagnetic angle seat valve 403a is connected to a signal output end of the first coolant standby storage valve of the controller, a material outlet of the fourth coolant electromagnetic angle seat valve 403a is connected to the starting end of the coolant standby storage main pipe through a first coolant standby storage branch pipe, a terminal end of the coolant standby storage main pipe is connected to a material inlet of a first coolant standby infusion pump 405a, and a material outlet of the first coolant standby infusion pump 405a is connected to a material inlet of a third coolant electromagnetic angle seat valve 311.

[0058] Preferably, the first coolant standby infusion pump 405a is a pneumatic diaphragm pump, the driving gas input end of the first coolant standby infusion pump 405a is connected to one end of the first coolant standby gas transmission branch pipe, the other end of the first coolant standby gas transmission branch pipe is connected to the end of the coolant standby gas transmission main pipe, and the beginning of the coolant standby gas transmission main pipe is connected to the compressed air pipe. The coolant standby gas transmission main pipe is provided with a coolant standby pneumatic triplet 409, a coolant standby infusion pump solenoid valve 408 and a coolant standby air strike protector 407 in sequence along the air flow direction. The signal input end of the coolant standby infusion pump solenoid valve 408 is connected to the coolant standby pump drive signal output end of the controller.

[0059] When coolant standby delivery is required, the controller sends a stop delivery instruction to the coolant station delivery unit, sends a start delivery instruction to the coolant standby delivery unit, and sends a connection instruction to the fourth coolant electromagnetic angle seat valve 403a to connect the first coolant standby storage tank 401a with the coolant standby storage main pipe. The controller sends a connection instruction to the coolant standby infusion pump solenoid valve 408 to connect the coolant standby gas main pipe with the compressed air pipe, so that the compressed control in the compressed air pipe is delivered to the first coolant standby infusion pump 405a through the coolant standby gas main pipe, and enters from the driving air input end of the first coolant standby infusion pump 405a, opens the first coolant standby infusion pump 405a through the air pressure of the compressed air, provides pressure for the coolant through the first coolant standby infusion pump 405a, and pumps the coolant in the first coolant standby storage tank 401a to the coolant filling port.

[0060] Preferably, the first coolant standby infusion pump 405a is connected in parallel with the second coolant standby infusion pump 405b. Preferably, the second coolant standby infusion pump 405b is also a pneumatic diaphragm pump, and the driving gas input end of the second coolant standby infusion pump 405b is connected to one end of the second coolant standby gas supply branch pipe, and the other end of the second coolant standby gas supply branch pipe is connected to the end of the coolant standby gas supply main pipe.

[0061] The first coolant standby infusion pump 405a and the second coolant standby infusion pump 405b are installed one for use and one for backup. The material inlet, material outlet and driving gas input end of the first coolant standby infusion pump 405a are all provided with manual valves, and the material inlet, material outlet and driving gas input end of the second coolant standby infusion pump 405b are also all provided with manual valves. When the first coolant standby infusion pump 405a fails, the material inlet, material outlet and driving gas input end of the first coolant standby infusion pump 405a are cut off by the manual valve, and the material inlet, material outlet and driving gas input end of the second coolant standby infusion pump 405b are connected, so as to realize the switching of the first coolant standby infusion pump 405a and the second coolant standby infusion pump 405b.

[0062] Preferably, the coolant standby delivery unit is also equipped with a second coolant standby storage tank 401b, in which a second coolant suction pump 402b is provided, and the second coolant suction pump 402b is also connected to the fifth coolant electromagnetic angle seat valve 403b through a coolant suction hose, and the fifth coolant electromagnetic angle seat valve 403b is connected to the second coolant standby storage branch pipe and the beginning of the coolant standby storage main pipe. A coolant standby delivery flow detector 404 is provided on the coolant standby storage main pipe, and the signal output end of the coolant flow detector 404 is connected to the coolant standby flow signal input end of the controller. Among them, the first coolant standby storage tank 401a and the second coolant standby storage tank 401b are installed as one for use and one for backup.

[0063] Preferably, the coolant standby delivery unit also includes a coolant standby delivery barrel change sound and light alarm, and the coolant standby delivery barrel change sound and light alarm signal input end is connected to the coolant standby delivery alarm signal output end of the controller.

[0064] When the detection signal of the coolant standby flow detector 404 is less than the set value, the controller immediately closes the fourth coolant electromagnetic angle seat valve 403a, opens the fifth coolant electromagnetic angle seat valve 403b, and sends an alarm instruction to the coolant standby delivery barrel change sound and light alarm, and sends a coolant barrel change sound and light alarm signal through the coolant standby delivery barrel change sound and light alarm; when the coolant standby flow detector 404 detects the interruption of pipeline fluid again, the controller immediately closes the fifth coolant electromagnetic angle seat valve 403b, opens the fourth coolant electromagnetic angle seat valve 403a, and sends an alarm instruction to the coolant standby delivery barrel change sound and light alarm, and sends a coolant barrel change sound and light alarm signal through the coolant standby delivery barrel change sound and light alarm; and the cycle is repeated.

[0065] The refrigerant subsystem includes a first refrigerant steel cylinder 201a, a first steel cylinder scale 211a is provided at the bottom of the first refrigerant steel cylinder 201a, a signal output end of the first steel cylinder scale 211a is connected to a first steel cylinder weight signal input end of the controller, the first refrigerant steel cylinder 201a is connected to one end of a first refrigerant liquid supply branch pipe, a first refrigerant electromagnetic angle seat valve 202a is provided on the first refrigerant liquid supply branch pipe, and a signal input end of the first refrigerant electromagnetic angle seat valve 202a is connected to a first refrigerant valve signal output end of the controller. The other end of the first refrigerant liquid supply branch pipe is connected to one end of a refrigerant liquid supply main pipe, the other end of the refrigerant liquid supply main pipe is connected to a material inlet of a first plunger pump 205a, and a material outlet of the first plunger pump 205a is connected to a material inlet of a third refrigerant electromagnetic angle seat valve 207 through a refrigerant delivery main pipe, a second refrigerant pressure sensor 206 is provided on the refrigerant delivery main pipe, a signal output end of the second refrigerant pressure sensor 206 is connected to a refrigerant terminal pressure sensor signal input end of the controller, and the third refrigerant electromagnetic angle seat valve 207 is connected to a refrigerant filling machine inlet. The other end of the refrigerant liquid supply main pipe is connected to the material inlet of the refrigerant overpressure discharge valve 204, and the material outlet of the refrigerant overpressure discharge valve 204 is connected to the material inlet end of the refrigerant delivery main pipe.

[0066] Preferably, the first plunger pump 205a is a pneumatic plunger pump, the driving gas input end of the first plunger pump 205a is connected to one end of the first refrigerant gas branch pipe, the other end of the first refrigerant gas branch pipe is connected to the end of the refrigerant gas main pipe, and the beginning of the refrigerant gas main pipe is connected to the compressed air pipe. The refrigerant gas main pipe is provided with a refrigerant pneumatic triplet 210, a refrigerant solenoid valve 209 and a refrigerant air strike protector 208 in sequence along the airflow direction.

[0067] When refrigerant delivery is required, the controller sends a start delivery instruction to the refrigerant subsystem, and sends a connection instruction to the first refrigerant electromagnetic angle seat valve 202a, so that the first refrigerant cylinder 201a is connected to the refrigerant liquid supply pipe. The controller sends a connection instruction to the refrigerant electromagnetic valve 209, so that the coolant station area gas delivery pipe is connected to the compressed air pipe, so that the compressed air in the compressed air pipe is delivered to the first plunger pump 205a through the coolant station area gas delivery pipe, and enters from the driving air input end of the first plunger pump 205a, and opens the first plunger pump 205a through the air pressure of the compressed air, and provides pressure for the coolant through the first plunger pump 205a, and pumps the refrigerant in the first refrigerant cylinder 201a to the refrigerant filling port.

[0068] The refrigerant subsystem includes a second refrigerant steel cylinder 201b, a second steel cylinder scale 211b is provided at the bottom of the second refrigerant steel cylinder 201b, a signal output end of the second steel cylinder scale 211b is connected to a second steel cylinder weight signal input end of the controller, the second refrigerant steel cylinder 201b is connected to one end of the second refrigerant liquid supply branch pipe, a second refrigerant electromagnetic angle seat valve 202b is provided on the second refrigerant liquid supply branch pipe, and a signal input end of the second refrigerant electromagnetic angle seat valve 202b is connected to a valve signal output end of the controller second refrigerant steel cylinder 201b. The other end of the second refrigerant liquid supply branch pipe is also connected to one end of the refrigerant liquid supply main pipe. The first refrigerant steel cylinder 201a and the second refrigerant steel cylinder 201b are set up in one use and one standby.

[0069] Preferably, the refrigerant subsystem further comprises a refrigerant barrel change sound and light alarm, and a signal input end of the refrigerant barrel change sound and light alarm is connected to a refrigerant alarm signal output end of the controller.

[0070] When the detection signal of the first cylinder scale 211a is less than the set value, the controller immediately closes the first refrigerant electromagnetic angle seat valve, opens the second refrigerant electromagnetic angle seat valve, and sends an alarm command to the refrigerant barrel change sound and light alarm, and sends a refrigerant barrel change sound and light alarm signal through the refrigerant barrel change sound and light alarm; when the detection signal of the first cylinder scale 211b is less than the set value, the controller immediately closes the second refrigerant electromagnetic angle seat valve, opens the first refrigerant electromagnetic angle seat valve, and sends an alarm command to the refrigerant barrel change sound and light alarm, and sends a refrigerant barrel change sound and light alarm signal through the refrigerant barrel change sound and light alarm; and the cycle continues.

[0071] Preferably, a first refrigerant pressure sensor 203 is provided on the refrigerant liquid supply main pipe, and the signal output end of the first refrigerant pressure sensor 203 is connected to the refrigerant start pressure signal input end of the controller. When the first refrigerant pressure sensor 203 detects low pressure and does not recover within a set time, such as 3 minutes, the controller sends an alarm instruction to the refrigerant barrel change sound and light alarm, and the refrigerant barrel change sound and light alarm sends a refrigerant barrel change sound and light alarm signal through the refrigerant barrel change sound and light alarm to remind the tank change. The first refrigerant pressure sensor 203 and the first cylinder scale 201a and the second cylinder scale 201b are backup solutions for each other, providing double insurance.

[0072] Preferably, the first plunger pump 205a is also connected in parallel with a second plunger pump 205b, the signal input end of the second plunger pump 205b is connected to the signal output end of the controller refrigerant second pump, wherein the second plunger pump 205b is a pneumatic plunger pump, the driving gas input end of the second plunger pump 205b is connected to one end of the second refrigerant gas branch pipe, and the other end of the second refrigerant gas branch pipe is connected to the end of the refrigerant gas main pipe. The first plunger pump 205a and the second plunger pump 205b are installed as one for use and one for backup. The material inlet, material outlet and driving gas input end of the first plunger pump 205a are all provided with manual valves, and the material inlet, material outlet and driving gas input end of the second plunger pump 205b are also provided with manual valves. When the first plunger pump 205a fails, the material inlet, material outlet and driving gas input end of the first plunger pump 205a are cut off by the manual valve, and the material inlet, material outlet and driving gas input end of the second plunger pump 205b are connected, so as to realize the switching of the first plunger pump 205a and the second plunger pump 205b.

[0073] Preferably, the centralized liquid supply system of the automobile assembly workshop also includes a windshield washer liquid subsystem. The windshield washer liquid subsystem includes a methanol unloading unit, a liquid mixing unit, a mixed liquid station area delivery unit and a mixed liquid standby delivery unit, the methanol unloading output end of the controller is connected to the methanol unloading unit input end, the mixed liquid output end of the controller is connected to the mixed liquid unit input end, the station area delivery output end of the controller is connected to the mixed liquid station area delivery unit input end, and the standby delivery output end of the controller is connected to the mixed liquid standby delivery unit input end.

[0074] The methanol unloading unit includes a methanol liquid conveying subunit and a methanol gas recovery subunit. The methanol liquid station area conveying unit includes a methanol unloading joint 501, and the material inlet of the methanol unloading joint 501 is connected to the material outlet of the methanol tanker. The material outlet of the methanol unloading joint 501 is connected to the material inlet of the first methanol electromagnetic angle seat valve 502, and the signal input end of the first methanol electromagnetic angle seat valve 502 is connected to the methanol unloading signal output end of the controller. The material outlet of the first methanol electromagnetic angle seat valve 502 is connected to the material inlet of the first methanol unloading pump 504a through the methanol conveying main pipe. The methanol conveying main pipe is provided with a methanol flow detector 503, and the signal output end of the methanol flow detector 503 is connected to the methanol unloading signal input end of the controller. The material outlet of the first methanol unloading pump 504a is connected to two methanol stainless steel storage tanks 505 through two methanol conveying branches, and both of the two methanol stainless steel storage tanks 505 are provided with an unloading ultrasonic level meter and an unloading leakage detector. When the unloading ultrasonic level meter detects that the methanol in the methanol stainless steel storage tank 505 is less than the set value, the controller drives the first methanol electromagnetic angle seat valve 502 to open, and at the same time, the controller sends a start unloading instruction to the methanol unloading unit to transfer the methanol in the methanol tanker to the methanol stainless steel storage tank 505. When the unloading ultrasonic level meter detects that the methanol in the methanol stainless steel storage tank 505 is greater than the set value, the controller drives the first methanol electromagnetic angle seat valve 502 to close, and at the same time, the controller sends a stop unloading instruction to the methanol unloading unit to stop transferring the methanol in the methanol tanker to the methanol stainless steel storage tank 505. When the unloading leakage detector detects that there is a leak in the unloading liquid in the methanol stainless steel storage tank 505, the controller drives the first methanol electromagnetic angle seat valve 502 to close, and at the same time, the controller sends a stop unloading instruction to the methanol unloading unit.

[0075] Preferably, the end of the methanol delivery branch pipe extends into the bottom of the methanol stainless steel storage tank 505 to avoid splashing liquid and accelerating the volatilization of the methanol liquid. Preferably, the material outlets of the two methanol stainless steel storage tanks 505 are connected to a nitrogen protection system, and the nitrogen protection system includes a nitrogen bottle 511, the gas outlet of the nitrogen bottle 511 is connected to one end of a nitrogen pipe, and the other end of the nitrogen pipe is connected to the material outlets of the two methanol stainless steel storage tanks 505, and a manual valve is provided on the nitrogen pipe.

[0076] Preferably, the first methanol unloading pump 504a is a pneumatic diaphragm pump, the driving gas input end of the first methanol unloading pump 504a is connected to one end of the first methanol gas transmission branch pipe, the other end of the first methanol gas transmission branch pipe is connected to the end of the methanol gas transmission main pipe, and the beginning of the methanol gas transmission main pipe is connected to the compressed air pipe. A methanol pneumatic triplet 508, a methanol unloading pump solenoid valve 509 and a methanol air strike protector 510 are sequentially arranged along the air flow direction on the methanol gas transmission main pipe. The signal input end of the methanol unloading pump solenoid valve 509 is connected to the driving signal output end of the controller methanol station area pump. Preferably, the first methanol unloading pump 504a is connected in parallel with the second methanol unloading pump, and the first methanol unloading pump 504a and the second methanol unloading pump are installed one for use and one for backup. The material inlet, material outlet and driving gas input end of the first methanol unloading pump 504a are all provided with manual valves, and the material inlet, material outlet and driving gas input end of the second methanol unloading pump 504b are also provided with manual valves. When the first methanol unloading pump 504a fails, the material inlet, material outlet and driving gas input end of the first methanol unloading pump 504a are cut off by the manual valve, and the material inlet, material outlet and driving gas input end of the second methanol unloading pump 504b are connected, thereby realizing the switching of the first methanol unloading pump 504a and the second methanol unloading pump 504b.

[0077] Preferably, the second methanol unloading pump 504b is also a pneumatic diaphragm pump, and the driving gas input end of the second methanol unloading pump 504b is connected to one end of the second methanol gas transmission branch pipe, and the other end of the second methanol gas transmission branch pipe is connected to the end of the methanol gas transmission main pipe.

[0078] The methanol gas recovery subunit includes a methanol gas recovery pipe connected to the tops of the two methanol stainless steel storage tanks, the other end of the methanol gas recovery pipe is connected to the material inlet of the second methanol electromagnetic angle seat valve 506, and the signal input end of the second methanol electromagnetic angle seat valve 506 is connected to the methanol recovery signal output end of the controller. The material outlet of the second methanol electromagnetic angle seat valve 506 is connected to the methanol gas recovery connector 507, and is connected to the gas inlet of the methanol tanker through the methanol gas recovery connector 507. The methanol gas recovery subunit is used to recover the volatilized gaseous methanol into the methanol tanker for recycling, thereby reducing the loss of methanol and preventing the gas formed by methanol from leaking into the air to avoid environmental pollution.

[0079] The liquid mixing unit includes a high liquid level tank 602 and a mixing tank 603. The high liquid level tank 602 is located above the mixing tank 603. The high liquid level tank 602 includes two containing tanks, namely a methanol containing tank 602a and a water containing tank 602b. The methanol containing tank 602a and the water containing tank 602b of the high liquid level tank 602 are both connected to the mixing tank 603 through a transfer pipe. A transfer solenoid valve is provided on the transfer pipe. The signal input end of the transfer solenoid valve is connected to the mixed signal output end of the controller. The mixing tank 603 is equipped with an agitator 603a.

[0080] A methanol ultrasonic level meter 611 and a methanol magnetostrictive level sensor 612 are provided in the methanol holding box 602a. The detection signal output end of the methanol ultrasonic level meter 611 is connected to the first methanol level signal input end of the controller, and the methanol magnetostrictive level sensor 612 is connected to the second methanol level signal input end of the controller.

[0081] A water ultrasonic level meter 613 and a water magnetostrictive level sensor 614 are provided in the water holding tank 602b. The detection signal output end of the water ultrasonic level meter 613 is connected to the first water level signal input end of the controller, and the water magnetostrictive level sensor 614 is connected to the second water level signal input end of the controller. A methanol ultrasonic level meter 611 and a methanol magnetostrictive level sensor 612 are provided at the same time to prevent methanol from overflowing from the high-level liquid tank due to a failure of one of them, thereby ensuring both accuracy and reliability.

[0082] The bottom of the methanol holding tank 602a is connected to the material outlet of the mixed methanol pump 601, and the material inlet of the mixed methanol pump 601 is connected to the two methanol stainless steel storage tanks 505 through two mixing branches, and the two mixing branches both extend to the bottom of the methanol stainless steel storage tanks 505. The water holding tank 602b is connected to the material outlet of the mixed water pump 606, and the material inlet of the mixed water pump 606 is connected to the water tank. A mixed water level meter is provided in the water holding tank 602b, and the signal output end of the mixed water level meter is connected to the mixed water level signal input end of the controller.

[0083] Preferably, the mixed methanol pump 601 is a pneumatic diaphragm pump, the driving gas input end of the mixed methanol pump 601 is connected to one end of the mixed methanol gas delivery branch pipe, the other end of the mixed methanol gas delivery branch pipe is connected to the end of the mixed gas delivery main pipe, and the starting end of the mixed gas delivery main pipe is connected to the compressed air pipe. The mixed methanol gas delivery branch pipe is provided with a mixed methanol infusion pump solenoid valve 608 and a mixed methanol air strike protector 607 in sequence along the air flow direction. The signal input end of the mixed methanol infusion pump solenoid valve 608 is connected to the driving signal output end of the controller mixed methanol pump 601. A mixed pneumatic triplet 609 is provided on the mixed gas delivery main pipe. When any one of the methanol ultrasonic level meter 611 or the methanol magnetostrictive level sensor 612 detects that the methanol in the methanol holding box 602a is greater than the set value, the controller sends a disconnection instruction to the mixed methanol infusion pump solenoid valve 608 to disconnect the driving gas of the mixed methanol pump 601, thereby stopping the mixed methanol pump 601 from continuing to transport methanol.

[0084] Preferably, the mixing water pump 606 is a pneumatic diaphragm pump, the driving air input end of the mixing water pump 606 is connected to one end of the mixing water air delivery branch pipe, and the other end of the mixing water air delivery branch pipe is connected to the end of the mixing air delivery main pipe. The mixing water infusion pump electromagnetic valve 610 and the mixing water air strike protector 615 are arranged in sequence along the air flow direction on the mixing water air delivery branch pipe. The signal input end of the mixing water infusion pump electromagnetic valve 610 is connected to the driving signal output end of the controller mixing water pump 606. When any one of the water ultrasonic level meter 613 or the water magnetostrictive level sensor 614 detects that the water in the water holding tank 602b is greater than the set value, the controller sends a disconnection instruction to the mixing water infusion pump electromagnetic valve 610 to disconnect the driving air of the mixing water pump 606, thereby stopping the mixing water pump 606 from continuing to deliver water.

[0085] The bottom of the mixing box 603 is provided with a methanol mixed liquid outlet, the methanol mixed liquid outlet is connected to the material inlet of the third methanol electromagnetic angle seat valve 604a, the material outlet of the third methanol electromagnetic angle seat valve 604a is connected to the material inlet of the mixed liquid storage tank 604 through the mixed liquid gravity pipe, and the signal input end of the third methanol electromagnetic angle seat valve 604a is connected to the signal output end of the mixed liquid transfer valve of the controller. The mixed liquid gravity pipe extends into the bottom of the mixed liquid storage tank 604, and the mixed liquid storage tank 604 is also equipped with a mixed liquid ultrasonic level meter and a mixed liquid leakage detector. The mixed liquid ultrasonic level meter signal output end is connected to the controller's first mixed liquid level signal input end, and the mixed liquid leakage detector signal output end is connected to the mixed liquid leakage detection signal input end of the controller. When the mixed liquid ultrasonic level meter detects that the mixed liquid in the mixed liquid storage tank 604 is less than the set value, the controller drives the third methanol electromagnetic angle seat valve 604a to open, and the mixed liquid in the mixing box 603 is transferred to the mixed liquid storage tank 604. At the same time, the controller sends a stop delivery instruction to the mixed liquid station area delivery unit. When the mixed liquid ultrasonic level meter detects that the mixed liquid in the mixed liquid storage tank 604 exceeds the set value, the controller drives the third methanol electromagnetic angle seat valve 604a to close, stops transferring the mixed liquid in the mixing box 603 to the mixed liquid storage tank 604, and at the same time, the controller sends a start delivery instruction to the mixed liquid station area delivery unit. When the mixed liquid leakage detector detects that the mixed liquid in the mixed liquid storage tank 604 is leaking, the controller drives the third methanol electromagnetic angle seat valve 604a to close, and at the same time, the controller sends a stop delivery instruction to the mixed liquid station area delivery unit.

[0086] The mixed liquid standby delivery unit includes a first mixed liquid station delivery pump 701a. The material inlet of the first mixed liquid station delivery pump 701a is connected to the material outlet of the mixed liquid storage tank 604 through the mixed liquid station delivery pipe, and the mixed liquid station delivery pipe extends into the bottom of the mixed liquid storage tank 604. The material outlet of the first mixed liquid station delivery pump 701a is connected to one end of the mixed liquid remote supply pipe. A methanol concentration online detector 703 and a mixed liquid pressure detector 704 are sequentially arranged on the mixed liquid remote supply pipe along the liquid supply direction. The other end of the mixed liquid remote supply pipe is connected to the material inlet of the fourth methanol mixed liquid electromagnetic angle seat valve 708, and the material outlet of the fourth methanol mixed liquid electromagnetic angle seat valve 708 is connected to the methanol mixed liquid filling machine. The signal input end of the fourth methanol mixed liquid electromagnetic angle seat valve 708 is connected to the mixed liquid delivery on-off end of the controller.

[0087] The material outlet of the mixed liquid storage tank 604 is connected to the material inlet of the methanol gas overpressure discharge valve 702 through the methanol gas delivery pipe, and the material outlet of the methanol gas overpressure discharge valve 702 is connected to the remote liquid supply pipe of the mixed liquid.

[0088] Preferably, the first mixed liquid station area delivery pump 701a is a pneumatic diaphragm pump, the driving gas input end of the first mixed liquid station area delivery pump 701a is connected to one end of the first mixed liquid gas delivery branch pipe, the other end of the first mixed liquid gas delivery branch pipe is connected to the end of the mixed liquid gas delivery main pipe, and the beginning of the mixed liquid gas delivery main pipe is connected to the compressed air pipe. The mixed liquid pneumatic triplet 707, the mixed liquid infusion pump solenoid valve 706 and the mixed liquid air strike protector 705 are sequentially arranged along the air flow direction on the mixed liquid gas delivery main pipe. The signal input end of the mixed liquid infusion pump solenoid valve 706 is connected to the mixed liquid pump drive signal output end of the controller.

[0089] Preferably, the first mixed liquid station area delivery pump 701a is connected in parallel with the second mixed liquid station area delivery pump 701b, and the first mixed liquid station area delivery pump 701a and the second mixed liquid station area delivery pump 701b are installed one for use and one for backup. The material inlet, material outlet and driving gas input end of the first mixed liquid station area delivery pump 701a are all provided with manual valves, and the material inlet, material outlet and driving gas input end of the second mixed liquid station area delivery pump 701b are also all provided with manual valves. When the first mixed liquid station area delivery pump 701a fails, the material inlet, material outlet and driving gas input end of the first mixed liquid station area delivery pump 701a are cut off by the manual valve, and the material inlet, material outlet and driving gas input end of the second mixed liquid station area delivery pump 701b are connected, thereby realizing the switching of the first mixed liquid station area delivery pump 701a and the second mixed liquid station area delivery pump 701b.

[0090] Preferably, the second mixed liquid station area delivery pump 701b is also a pneumatic diaphragm pump, and the driving gas input end of the second mixed liquid station area delivery pump 701b is connected to one end of the second mixed liquid gas delivery branch pipe, and the other end of the second mixed liquid gas delivery branch pipe is connected to the end of the mixed liquid gas delivery main pipe.

[0091] The mixed liquid standby conveying unit includes a first mixed liquid storage tank 801a, in which a first mixed liquid suction pump 802a is provided, the first mixed liquid suction pump 802a is connected to a mixed liquid suction hose, the other end of the mixed liquid suction hose is connected to the material inlet of the fifth mixed liquid electromagnetic angle seat valve 803a, the signal input end of the fifth mixed liquid electromagnetic angle seat valve 803a is connected to the signal output end of the first mixed liquid standby storage valve of the controller, the material outlet of the fifth mixed liquid electromagnetic angle seat valve 803a is connected to the material inlet of the first mixed liquid standby infusion pump 804a, and the material outlet of the first mixed liquid standby infusion pump 804a is connected to the material inlet of the fourth methanol mixed liquid electromagnetic angle seat valve 708.

[0092] Preferably, the first mixed liquid standby infusion pump 804a is a pneumatic diaphragm pump, the driving gas input end of the first mixed liquid standby infusion pump 804a is connected to one end of the first mixed liquid standby gas transmission branch pipe, the other end of the first mixed liquid standby gas transmission branch pipe is connected to the end of the mixed liquid standby gas transmission main pipe, and the beginning of the mixed liquid standby gas transmission main pipe is connected to the compressed air pipe. The mixed liquid standby gas transmission main pipe is provided with a mixed liquid standby pneumatic triplet 808, a mixed liquid standby infusion pump solenoid valve 807 and a mixed liquid standby air strike protector 806 in sequence along the airflow direction. The mixed liquid standby infusion pump solenoid valve 807 signal input end is connected to the mixed liquid standby pump drive signal output end of the controller.

[0093] Preferably, the first mixed liquid standby infusion pump 804a is connected in parallel with the second mixed liquid standby infusion pump 804b, and the first mixed liquid standby infusion pump 804a and the second mixed liquid standby infusion pump 804b are installed one for use and one for backup, the material inlet, material outlet and driving gas input end of the first mixed liquid standby infusion pump 804a are all provided with manual valves, and the material inlet, material outlet and driving gas input end of the second mixed liquid standby infusion pump 804b are also all provided with manual valves. When the first mixed liquid standby infusion pump 804a fails, the material inlet, material outlet and driving gas input end of the first mixed liquid standby infusion pump 804a are cut off by the manual valve, and the material inlet, material outlet and driving gas input end of the second mixed liquid standby infusion pump 804b are connected, thereby realizing the switching of the first mixed liquid standby infusion pump 804a and the second mixed liquid standby infusion pump 804b.

[0094] Preferably, the second mixed liquid standby infusion pump 804b is also a pneumatic diaphragm pump, the driving gas input end of the second mixed liquid standby infusion pump 804b is connected to one end of the second mixed liquid standby gas transmission branch pipe, and the other end of the second mixed liquid standby gas transmission branch pipe is connected to the end of the mixed liquid standby gas transmission main pipe.

[0095] Preferably, the mixed liquid standby delivery unit is also equipped with a second mixed liquid storage tank 801b, in which a second mixed liquid suction pump 802a is provided, and the second mixed liquid suction pump 802a is also connected to the sixth mixed liquid electromagnetic angle seat valve 803b through a mixed liquid suction hose, and the sixth mixed liquid electromagnetic angle seat valve 803b is connected to the beginning of the mixed liquid supply pipe. The signal input end of the sixth mixed liquid electromagnetic angle seat valve 803b is connected to the signal output end of the second mixed liquid standby storage valve of the controller. A mixed liquid flow detector 809 is provided on the mixed liquid supply pipe, and the signal output end of the mixed liquid flow detector 809 is connected to the mixed liquid flow signal input end of the controller. Among them, the first mixed liquid storage tank 801a and the second mixed liquid storage tank 801b are installed as one for use and one for standby.

[0096] Preferably, the mixed liquid standby delivery unit also includes a mixed liquid standby delivery barrel change sound and light alarm, and the signal input end of the mixed liquid standby delivery barrel change sound and light alarm is connected to the mixed liquid standby delivery alarm signal output end of the controller.

[0097] When the detection signal of the mixed liquid flow detector 809 is less than the set value, the controller immediately closes the fifth mixed liquid electromagnetic angle seat valve 803a, opens the sixth mixed liquid electromagnetic angle seat valve 803b, and sends an alarm instruction to the mixed liquid standby delivery barrel change sound and light alarm, and sends a mixed liquid barrel change sound and light alarm signal through the mixed liquid standby delivery barrel change sound and light alarm; when the mixed liquid flow detector 809 detects the interruption of the pipeline fluid again, the controller immediately closes the sixth mixed liquid electromagnetic angle seat valve 803b, opens the fifth mixed liquid electromagnetic angle seat valve 803a, and sends an alarm instruction to the mixed liquid standby delivery barrel change sound and light alarm, and sends a mixed liquid barrel change sound and light alarm signal through the mixed liquid standby delivery barrel change sound and light alarm; and the cycle is repeated.

[0098] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A centralized liquid supply system for automobile assembly workshop, characterized in that: It includes a controller, a brake fluid subsystem, a coolant subsystem and a refrigerant subsystem, wherein the brake fluid control output end of the controller is connected to the brake fluid subsystem control input end, the coolant control output end of the controller is connected to the coolant subsystem control input end, and the refrigerant control output end of the controller is connected to the refrigerant subsystem control input end; The coolant subsystem includes a coolant unloading unit and a coolant station area delivery unit; The coolant unloading unit comprises a coolant liquid delivery subunit and a coolant gas recovery subunit; The coolant liquid transport subunit comprises a coolant liquid unloading joint (301), and is connected to a coolant tank truck through a material inlet of the coolant liquid unloading joint (301); a material outlet of the coolant liquid unloading joint (301) is connected to a material inlet of a first coolant liquid electromagnetic angle seat valve (302); a signal input end of the first coolant liquid electromagnetic angle seat valve (302) is connected to a coolant liquid unloading signal output end of a controller; the material outlet of the first coolant liquid electromagnetic angle seat valve (302) is connected to a material inlet of a first coolant liquid unloading pump (304a) through a coolant liquid station area transport main pipe; a coolant liquid unloading flow detector (303) is provided on the coolant liquid station area transport main pipe; a signal output end of the coolant liquid unloading flow detector (303) is connected to a coolant liquid unloading signal input end of the controller; a material outlet of the first coolant liquid unloading pump (304a) is connected to two coolant stainless steel storage tanks (305) through two coolant liquid station area transport branch pipes; a coolant liquid level gauge is provided in each of the two coolant stainless steel storage tanks (305); a coolant liquid level gauge signal output end is connected to a coolant liquid level signal input end of the controller; The first coolant unloading pump (304a) is a pneumatic diaphragm pump, the driving air input end of the first coolant unloading pump (304a) is connected to one end of the first coolant unloading gas transmission branch pipe, the other end of the first coolant unloading gas transmission branch pipe is connected to the end of the coolant unloading gas transmission main pipe, and the beginning of the coolant unloading gas transmission main pipe is connected to the compressed air pipe; the coolant unloading gas transmission main pipe is provided with a coolant unloading pneumatic triplet (306), a coolant unloading pump solenoid valve (307) and a coolant unloading anti-air strike protector (308) in sequence along the air flow direction; the coolant unloading pump solenoid valve (307) signal input end is connected to the controller coolant station area pump driving signal output end; The coolant gas recovery subunit comprises a coolant gas recovery pipe connected to the tops of the two coolant stainless steel storage tanks (305); the other end of the coolant gas recovery pipe is connected to the material inlet of the second coolant electromagnetic angle seat valve (316); the signal input end of the second coolant electromagnetic angle seat valve (316) is connected to the coolant recovery signal output end of the controller; the material outlet of the second coolant electromagnetic angle seat valve (316) is connected to the coolant gas recovery connector (315), and is connected to the coolant gas inlet of the coolant tank truck through the coolant gas recovery connector (315); The cooling liquid station area delivery unit comprises a cooling liquid delivery pipe whose starting end is connected to the delivery ports at the bottom of the two cooling liquid stainless steel storage tanks (305); the cooling liquid delivery pipe has a terminal end connected to the material inlet of the first cooling liquid delivery pump (309a); the material outlet of the first cooling liquid delivery pump (309a) is connected to the material inlet of the third cooling liquid electromagnetic angle seat valve (311) through the cooling liquid station area delivery pipe; the material outlet of the third cooling liquid electromagnetic angle seat valve (311) is connected to the cooling liquid filling machine; the signal input end of the third cooling liquid electromagnetic angle seat valve (311) is connected to the cooling liquid filling signal output end of the controller; a cooling liquid station area delivery pressure detector (310) is provided on the cooling liquid station area delivery pipe; the signal output end of the cooling liquid station area delivery pressure detector (310) is connected to the cooling liquid station area delivery pressure signal input end of the controller; the cooling liquid station area delivery pipe pressure is monitored in real time through the cooling liquid station area delivery pressure detector (310); The first coolant infusion pump (309a) is a pneumatic diaphragm pump, the driving gas input end of the first coolant infusion pump (309a) is connected to one end of the first coolant station area gas transmission branch pipe, the other end of the first coolant station area gas transmission branch pipe is connected to the end of the coolant station area gas transmission main pipe, and the beginning of the coolant station area gas transmission main pipe is connected to the compressed air pipe; the coolant pneumatic triplet (312), the coolant infusion pump solenoid valve (313) and the coolant anti-air strike protector (314) are arranged in sequence along the air flow direction on the coolant station area gas transmission main pipe; the signal input end of the coolant infusion pump solenoid valve (313) is connected to the coolant station area pump driving signal output end of the controller; The coolant subsystem further comprises a coolant standby delivery unit, the coolant standby delivery unit comprising a first coolant standby storage tank (401a), a first coolant suction pump (402a) being arranged in the first coolant standby storage tank (401a), the first coolant suction pump (402a) being connected to a coolant suction hose, the other end of the coolant suction hose being connected to a material inlet of a fourth coolant electromagnetic angle seat valve (403a), a signal input end of the fourth coolant electromagnetic angle seat valve (403a) being connected to a signal output end of the first coolant standby storage valve of the controller, a material outlet of the fourth coolant electromagnetic angle seat valve (403a) being connected to a starting end of a coolant standby storage main pipe through a first coolant standby storage branch pipe, a terminal end of the coolant standby storage main pipe being connected to a material inlet of a first coolant standby infusion pump (405a), and a material outlet of the first coolant standby infusion pump (405a) being connected to a material inlet of a third coolant electromagnetic angle seat valve (311); The first coolant standby infusion pump (405a) is a pneumatic diaphragm pump, the driving air input end of the first coolant standby infusion pump (405a) is connected to one end of the first coolant standby air supply branch pipe, the other end of the first coolant standby air supply branch pipe is connected to the end of the coolant standby air supply main pipe, and the beginning of the coolant standby air supply main pipe is connected to the compressed air pipe; a coolant standby pneumatic triplet (409), a coolant standby infusion pump solenoid valve (408) and a coolant standby air strike protector (407) are sequentially arranged along the air flow direction of the coolant standby air supply main pipe; the signal input end of the coolant standby infusion pump solenoid valve (408) is connected to the coolant standby pump driving signal output end of the controller.

2. The centralized liquid supply system for automobile assembly workshop according to claim 1, characterized in that: The brake fluid subsystem comprises a first brake fluid reservoir (101a), wherein a first brake fluid suction pump (102a) is provided in the first brake fluid reservoir (101a), the first brake fluid suction pump (102a) is connected to a brake fluid suction hose, the other end of the brake fluid suction hose is connected to a material inlet of a first brake fluid electromagnetic angle seat valve (104a), a signal input end of the first brake fluid electromagnetic angle seat valve (104a) is connected to a signal output end of a first brake fluid reservoir valve of a controller; a material outlet of the first brake fluid electromagnetic angle seat valve (104a) is connected to a material inlet of a first brake fluid infusion pump (106a), the material outlet of the first brake fluid infusion pump (106a) is connected to a material inlet of a brake fluid supply terminal valve (108) via a brake fluid infusion pipe, a brake fluid pressure detector (107) is provided on the brake fluid infusion pipe, a signal output end of the brake fluid pressure detector (107) is connected to a brake fluid pressure signal input end of the controller, and a material outlet of the brake fluid supply terminal valve (108) is connected to a brake fluid filling machine; The first brake fluid infusion pump (106a) is a pneumatic diaphragm pump; a driving air input end of the first brake fluid infusion pump (106a) is connected to one end of a first brake fluid air supply branch pipe; the other end of the first brake fluid air supply branch pipe is connected to the end of a brake fluid air supply main pipe; and the beginning of the brake fluid air supply main pipe is connected to a compressed air pipe; a brake fluid pneumatic triplet (111), a brake fluid pump solenoid valve (110) and a brake fluid runaway protector (109) are sequentially arranged on the brake fluid air supply main pipe in the direction of air flow.

3. The centralized liquid supply system for automobile assembly workshop according to claim 2 is characterized in that: The brake fluid subsystem is also equipped with a second brake fluid reservoir (101b), wherein a second brake fluid suction pump (102b) is arranged in the second brake fluid reservoir (101b), and the second brake fluid suction pump (102b) is also connected to a second brake fluid electromagnetic angle seat valve (104b) through a brake fluid suction hose, and the second brake fluid electromagnetic angle seat valve (104b) is connected to the beginning of a brake fluid supply pipe; a signal input end of the second brake fluid electromagnetic angle seat valve (104b) is connected to a signal output end of a second brake fluid reservoir valve of a controller; a brake fluid flow detector (105) is arranged on the brake fluid supply pipe, and a signal output end of the brake fluid flow detector (105) is connected to a brake fluid flow signal input end of the controller; wherein the first brake fluid reservoir (101a) and the second brake fluid reservoir (101b) are installed in a one-for-one arrangement; The brake fluid subsystem also includes a brake fluid barrel-changing sound and light alarm, and a signal input end of the brake fluid barrel-changing sound and light alarm is connected to a brake fluid alarm signal output end of the controller.

4. The centralized liquid supply system for automobile assembly workshop according to claim 3 is characterized in that: A drying cylinder (103) is provided on the vents of the first brake fluid storage tank (101a) and the second brake fluid storage tank (101b).

5. The centralized liquid supply system for automobile assembly workshop according to claim 1, characterized in that: The refrigerant subsystem comprises a first refrigerant steel cylinder (201a), a first steel cylinder scale (211a) is provided at the bottom of the first refrigerant steel cylinder (201a), a signal output end of the first steel cylinder scale (211a) is connected to a first steel cylinder weight signal input end of the controller, the first refrigerant steel cylinder (201a) is connected to one end of a first refrigerant liquid supply branch pipe, a first refrigerant electromagnetic angle seat valve (202a) is provided on the first refrigerant liquid supply branch pipe, the signal input end of the first refrigerant electromagnetic angle seat valve (202a) is connected to a first refrigerant valve signal output end of the controller; the other end of the first refrigerant liquid supply branch pipe is connected to one end of a refrigerant liquid supply main pipe, and the other end of the refrigerant liquid supply main pipe is connected The material inlet of the first plunger pump (205a) and the material outlet of the first plunger pump (205a) are connected to the material inlet of the third refrigerant electromagnetic angle seat valve (207) through the refrigerant delivery main pipe. A second refrigerant pressure sensor (206) is provided on the refrigerant delivery main pipe. The signal output end of the second refrigerant pressure sensor (206) is connected to the refrigerant terminal pressure sensor signal input end of the controller. The third refrigerant electromagnetic angle seat valve (207) is connected to the refrigerant filling machine inlet; the other end of the refrigerant liquid supply main pipe is connected to the material inlet of the refrigerant overpressure discharge valve (204), and the material outlet of the refrigerant overpressure discharge valve (204) is connected to the material inlet end of the refrigerant delivery main pipe; The first plunger pump (205a) is a pneumatic plunger pump, wherein a driving gas input end of the first plunger pump (205a) is connected to one end of a first refrigerant gas branch pipe, the other end of the first refrigerant gas branch pipe is connected to the end of a refrigerant gas main pipe, and the beginning of the refrigerant gas main pipe is connected to a compressed air pipe; a refrigerant pneumatic triplet (210), a refrigerant solenoid valve (209) and a refrigerant air strike protector (208) are sequentially arranged along the airflow direction on the refrigerant gas main pipe.

6. The centralized liquid supply system for automobile assembly workshop according to claim 5, characterized in that: The refrigerant subsystem comprises a second refrigerant steel cylinder (201b), a second steel cylinder scale (211b) is provided at the bottom of the second refrigerant steel cylinder (201b), a signal output end of the second steel cylinder scale (211b) is connected to a second steel cylinder weight signal input end of the controller, the second refrigerant steel cylinder (201b) is connected to one end of a second refrigerant liquid supply branch pipe, a second refrigerant electromagnetic angle seat valve (202b) is provided on the second refrigerant liquid supply branch pipe, and a signal input end of the second refrigerant electromagnetic angle seat valve (202b) is connected to a valve signal output end of the second refrigerant steel cylinder (201b) of the controller; the other end of the second refrigerant liquid supply branch pipe is also connected to one end of the refrigerant liquid supply main pipe; and the first refrigerant steel cylinder (201a) and the second refrigerant steel cylinder (201b) are arranged in a one-for-one arrangement; The refrigerant subsystem also includes a refrigerant barrel change sound and light alarm, and a signal input end of the refrigerant barrel change sound and light alarm is connected to a refrigerant alarm signal output end of the controller.

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