Auxiliary control device and method for a trunk gas engine unit

Abstract

The application relates to a box-type gas generator set auxiliary control device and method. The device comprises an air intake system pressure control device, a box constant temperature and constant pressure control device and a horizontal heat dissipation water tank fan control device. The air intake system pressure control device is used to ensure that the gas pressure entering the generator set is within a certain range, and the box constant temperature and constant pressure control device is used to monitor and ensure the required air volume and heat dissipation amount of the generator set. When the generator set is stopped for a long time, the louvers are kept closed, the wind sand and willow catkins can be effectively prevented from entering the box, a heater is arranged in the box to maintain the temperature of the box within a certain range, and damage of low temperature to the devices in the box is avoided; the horizontal heat dissipation water tank fan control device is used to realize orderly switching of the heat dissipation fans, the high-temperature water temperature of the generator set can be maintained stable, balanced utilization of the heat dissipation fans is realized, and the failure rate of the heat dissipation fans is effectively reduced. The device is used to ensure stable and reliable operation of the gas generator set.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas power generation, in particular to a box-type gas power generating set auxiliary control device and method. BACKGROUND

[0002] The box-type power generating set has the advantage of being movable and can be applied to different locations, but the gas power generating set has certain requirements for the on-site gas source, especially the concentration and pressure of the gas source need to be within an adaptable range. When exceeding a certain range, the air-fuel ratio system of the set body cannot adapt to the on-site gas source, especially at the moment of starting the set, the influence of the gas source is more obvious. When the concentration of the gas source is too high, too much gas enters the set at a moment, and cannot be ignited in the cylinder of the set, thereby causing starting difficulty or even failure to start.

[0003] The box-type power generating set is mostly arranged outdoors and needs to adapt to different environments. Different environmental conditions directly affect the performance of the gas power generating set, among which the environmental temperature and the size of the air pressure are very important aspects. High environmental temperature affects the performance and load carrying capacity of the set. The size of the air pressure during the operation of the set directly affects the cooling and heat dissipation of the set. Low environmental temperature affects the storage of devices, etc.

[0004] The cooling method of the box-type gas power generating set mostly adopts a horizontal heat dissipation water tank. The horizontal heat dissipation water tank has the advantages of convenient installation and small size. The horizontal heat dissipation water tank of a high-power gas power generating set is provided with a plurality of heat dissipation fans. The number of the heat dissipation fans that are turned on can be controlled to control the heat dissipation amount, so as to adjust the water temperature of the cooling system of the gas power generating set and make the water temperature tend to be stable. However, when the water temperature is stably in an interval for a long time, only individual heat dissipation fans are always in the start / stop switching state, and the rest of the heat dissipation fans rarely operate. The failure rate of the fan in the start / stop switching state is obviously increased. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a box-type gas power generating set auxiliary control device and method to ensure the stable and reliable operation of the gas power generating set.

[0006] According to a first aspect of the embodiment of the present application, a box-type gas power generating set auxiliary control device is provided, which comprises:

[0007] An air inlet system pressure control device, a box constant temperature and pressure control device, and a horizontal heat dissipation water tank fan control device;

[0008] The air inlet system pressure control device is arranged on the gas system branch pipeline of the gas power generating set. The air inlet system pressure control device is used for controlling the gas inlet pressure of the gas power generating set.

[0009] The box constant temperature and constant pressure control device is arranged at a gas outlet of the gas generator set, and is used to make the temperature and pressure of the box-type gas generator set reach stable values corresponding to preset values.

[0010] The horizontal heat dissipation water tank fan control device is connected with the gas generator set, and is used to control the start and stop of different numbers of heat dissipation fans on the horizontal heat dissipation water tank, so as to realize balanced use of the heat dissipation fans.

[0011] Further, the gas inlet system pressure control device comprises:

[0012] The gas inlet system pressure control device comprises a manual turbine butterfly valve, an electromagnetic valve, an electric disc valve, a gas pressure transmitter, a first control unit and a unit controller.

[0013] The first control unit is connected with the electromagnetic valve, the electric disc valve, the gas pressure transmitter and the unit controller respectively.

[0014] The manual turbine butterfly valve, the electromagnetic valve, the electric disc valve and the gas pressure transmitter are sequentially arranged on a gas system branch pipeline of the box-type gas generator set.

[0015] Further, the box constant temperature and constant pressure control device comprises:

[0016] The box constant temperature and constant pressure control device comprises a box inlet air pressure sensor, a box outlet air pressure sensor, a box inlet air temperature sensor, a box outlet air temperature sensor, an inlet air louver, an outlet air louver, an axial flow fan, a heater and a second control unit.

[0017] The second control unit is connected with the box inlet air pressure sensor, the box outlet air pressure sensor, the box inlet air temperature sensor, the box outlet air temperature sensor, the inlet air louver, the outlet air louver, the axial flow fan and the heater respectively.

[0018] The box inlet air pressure sensor and the box inlet air temperature sensor are installed at a box-type gas generator set box top inlet. The box outlet air pressure sensor and the box outlet air temperature sensor are installed at a box-type gas generator set box top outlet. The axial flow fan is installed at the box-type gas generator set box outlet and adopts a strong exhaust air mode. The heater is arranged on both sides of the box-type gas generator set box.

[0019] Further, the horizontal heat dissipation water tank fan control device comprises:

[0020] Contactor contact, fault protection contact, third control unit, control relay coil, temperature sensor, thermal magnetic circuit breaker, controller relay contact, contactor coil, cooling fan;

[0021] The third control unit is connected to the contactor contact, the fault protection contact, the control relay coil, the temperature sensor, the thermal magnetic circuit breaker, the controller relay contact, the contactor coil and the cooling fan respectively.

[0022] Further, the horizontal cooling water tank fan control device further comprises an overload fault protection unit, which is used for feeding back the overload fault protection contact to the control unit, and if the cooling fan has an overload fault, the control unit sends an alarm and automatically switches to the next priority cooling fan to start.

[0023] According to a second aspect of the embodiment of the present application, an auxiliary control method of a box-type gas engine set is provided, which is applied to the auxiliary control device of the box-type gas engine set in any of the above embodiments, and the method comprises:

[0024] The preset gas intake amount of the box-type gas engine set is obtained, and a preset first control method is used to control the gas intake pressure of the box-type gas engine set, so that the gas intake pressure value of the box-type gas engine set reaches a stable value corresponding to the preset value.

[0025] The preset air inlet pressure of the box-type gas engine set, the preset air inlet temperature of the box-type gas engine set, the preset air outlet pressure of the box-type gas engine set, and the preset air outlet temperature of the box-type gas engine set are obtained, and a preset second control method is used to control the temperature and pressure of the box-type gas engine set to reach a stable value corresponding to the preset value.

[0026] The priority of the initial cooling fan is defined, the fan operation is controlled according to the priority, and the overload protection is set, so that the cooling fans are balanced and utilized.

[0027] Further, the preset gas intake amount of the box-type gas engine set is obtained, and a preset first control method is used to control the gas intake pressure of the box-type gas engine set, so that the gas intake pressure value of the box-type gas engine set reaches a stable value in a preset mode.

[0028] According to the preset running state of the gas generator set, different preset values are set through the preset opening angle of the electric butterfly valve; the preset values include: preset value 1 corresponding to the start of the unit, preset value 2 corresponding to the idling of the unit, and preset value 3 corresponding to the full speed of the unit.

[0029] The preset gas inlet amount of the box type gas engine set and the preset opening angle of the electric butterfly valve are set with different preset values, the gas pipeline pressure is collected according to the preset gas pressure transmitter, the opening angle of the electric butterfly valve is corrected, and the gas inlet pressure value of the box type gas engine set reaches the stable value corresponding to the preset value.

[0030] Further, the preset air inlet pressure of the box type gas engine set, the preset air inlet temperature of the box type gas engine set, the preset air outlet pressure of the box type gas engine set, and the preset air outlet temperature of the box type gas engine set are obtained, a second preset control method is used to control the temperature and pressure of the box type gas engine set to reach the stable value corresponding to the preset value, and the second preset control method comprises the following steps:

[0031] The preset first opening angle of the preset air inlet / outlet louver is adjusted according to the preset air inlet / outlet temperature of the box type gas engine set, and a first adjustment result is obtained.

[0032] The preset first opening angle of the preset air inlet / outlet louver is corrected according to the preset air inlet / outlet pressure of the box type gas engine set by using the first adjustment result, and a second adjustment result is obtained, so that the pressure of the box type gas engine set reaches the stable value corresponding to the preset value.

[0033] The preset heater in the box is controlled to be turned on or turned off according to the average value of the preset air inlet temperature of the box type gas engine set and the preset air outlet temperature of the box type gas engine set, so that the temperature of the box type gas engine set reaches the stable value corresponding to the preset value.

[0034] Further, the priority of the preset initial cooling fan is defined, the fan is controlled to operate according to the priority, and overload protection is set, so that the cooling fan is balanced and utilized, and the method comprises the following steps:

[0035] The priority of the cooling fan set and the starting temperature of the cooling fan in the cooling fan set are determined, and the starting temperature of the cooling fan increases in turn.

[0036] It is judged in turn whether the obtained cooling water temperature is greater than or equal to the starting temperature, and if the obtained cooling water temperature is greater than or equal to the starting temperature, it is further judged whether the obtained cooling water temperature is greater than or equal to the nth starting temperature.

[0037] If the obtained cooling water temperature is less than the starting temperature, the starting signal of the cooling fan with low priority is withdrawn after a delay.

[0038] If the pre-obtained cooling water temperature is greater than or equal to the nth start temperature, a control output starts n priority cooling fans, a control unit controls the corresponding relay coil to be attracted, and then the corresponding contactor coil is attracted, and the priority cooling fan is powered on;

[0039] The overload fault protection of each cooling fan is used to continue to judge whether each cooling fan has a fault;

[0040] If the control unit receives a feedback from a fault protection contact of the started cooling fan, the cooling fan has a thermal protection fault, a third control unit is used to send a corresponding fault alarm, and the start signal of the cooling fan is withdrawn, and the cooling fan of the next priority is started automatically;

[0041] If the cooling fan has no fault, corresponding control logic is entered to judge whether the cooling fan is running; if the control unit receives a feedback from a contactor contact of the cooling fan, it is determined that the cooling fan is in a running state, and corresponding control logic is entered to start counting the running time of the cooling fan.

[0042] If the control unit does not receive a feedback from the contactor contact of the cooling fan, an automatic control failure alarm of the cooling fan is sent, and the cooling fan of the next priority is started automatically.

[0043] Further, the priority of the cooling fan group is determined, including:

[0044] An initial priority of the cooling fan in the cooling fan group is defined;

[0045] The initial priority of the cooling fan is used to modify the priority of each cooling fan according to the running time after a priority switching duration, and the priority of each cooling fan in the cooling fan group is determined.

[0046] The longer the running time is, the lower the priority of the cooling fan is.

[0047] The technical scheme provided by the embodiment of the application can include the following beneficial effects:

[0048] It can be understood that the technical scheme provided by the present application comprises: an air intake system pressure control device, a box constant temperature and constant pressure control device, and a horizontal heat dissipation water tank fan control device; the air intake system pressure control device is arranged on a gas generator set gas system branch pipeline, and is used for controlling the gas intake pressure of the gas generator set; the box constant temperature and constant pressure control device is arranged at a gas port of the gas generator set, and is used for making the temperature / pressure of the box-type gas generator set reach a stable value corresponding to a preset value; the horizontal heat dissipation water tank fan control device is connected with the gas generator set, and is used for controlling the start / stop of different numbers of heat dissipation fans on the horizontal heat dissipation water tank, so as to realize balanced utilization of the heat dissipation fans. The air intake system pressure control device is used for ensuring that the gas pressure entering the set is within a certain range, and the box constant temperature and constant pressure control device is used for monitoring and ensuring the required air amount and heat dissipation amount of the set; when the set is stopped for a long time, the louvers are kept closed, so that wind sand and willow catkins can be effectively prevented from entering the box body, and a heater is arranged in the box body, so that the temperature of the box body is maintained within a certain range, and damage of low temperature to devices in the box body is avoided; the horizontal heat dissipation water tank fan control device is used for realizing orderly switching of the heat dissipation fans, and the high-temperature water temperature of the set can also be maintained stable, so that balanced utilization of the heat dissipation fans is realized, and the failure rate of the heat dissipation fans is effectively reduced. The device of the present application ensures stable and reliable operation of the gas generator set.

[0049] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0050] The drawings incorporated into the specification and forming part of the specification, show embodiments consistent with the present application, and together with the specification, serve to explain the principles of the present application.

[0051] Figure 1 is a box-type gas generator set auxiliary control device composition schematic diagram according to an exemplary embodiment;

[0052] Figure 2 is a box-type gas generator set air intake system pressure control device block diagram according to an exemplary embodiment;

[0053] Figure 3 is a box-type gas generator set air intake system pressure control device logic block diagram according to an exemplary embodiment;

[0054] Figure 4 is a box-type gas generator set box constant temperature and constant pressure control device block diagram according to an exemplary embodiment;

[0055] Figure 5 Logic block diagram of the constant temperature and pressure control device of the box-type gas generator set box according to an exemplary embodiment;

[0056] Figure 6 Partial principle diagram of the horizontal heat dissipation water tank fan control device of the box-type gas generator set according to an exemplary embodiment;

[0057] Figure 7 Logic block diagram of the horizontal heat dissipation water tank fan control device of the box-type gas generator set according to an exemplary embodiment;

[0058] Figure 8 Auxiliary control method step schematic diagram of the box-type gas generator set according to an exemplary embodiment.

[0059] Reference signs:

[0060] Figure 1 In the drawings: 10, air intake system pressure control device, 20, box constant temperature and pressure control device, 30, horizontal heat dissipation water tank fan control device 30, 40, box-type gas generator set;

[0061] Figure 2 In the drawings: 1, manual turbine butterfly valve; 2, electromagnetic valve; 3, electric butterfly valve; 4, gas pressure transmitter; 5, gas generator set; 6, control unit; 7, set controller;

[0062] Figure 4 In the drawings: 1, air intake pressure transmitter; 2, air intake temperature sensor; 3, air outlet pressure transmitter; 4, air outlet temperature sensor; 5, control unit; 6, axial flow fan; 7, air intake louver; 8, air outlet louver; 9, heater.

[0063] Figure 6 In the drawings: 1, contactor contact; 2, fault protection contact; 3, control unit; 4, control relay coil; 5, temperature sensor; 6, thermal magnetic circuit breaker; 7, controller relay contact; 8, contactor coil; 9, heat dissipation fan. DETAILED DESCRIPTION

[0064] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, the same numbers are used to designate the same elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not meant to represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0065] Embodiment One

[0066] Please refer to Figure 1 ,Figure 1 is a schematic diagram of a box-type gas generator auxiliary control device according to an exemplary embodiment, and the device comprises:

[0067] an air intake system pressure control device 10, a box constant temperature and pressure control device 20, and a horizontal heat dissipation water tank fan control device 30;

[0068] The air intake system pressure control device 10 is arranged on the gas system branch pipeline of the gas generator set, and is used for controlling the gas intake pressure of the gas generator set.

[0069] The box constant temperature and pressure control device 20 is arranged at the gas air inlet of the gas generator set, and is used for making the temperature / pressure of the box-type gas generator set reach a stable value corresponding to a preset value.

[0070] The horizontal heat dissipation water tank fan control device 30 is used for controlling the opening / stop of different numbers of heat dissipation fans on the horizontal heat dissipation water tank, so as to realize balanced utilization of the heat dissipation fans.

[0071] Further, the air intake system pressure control device 10

[0072] comprises a manual turbine butterfly valve, a solenoid valve, an electric disc valve, a gas pressure transmitter, a first control unit, and a unit controller.

[0073] The first control unit is connected with the solenoid valve, the electric disc valve, the gas pressure transmitter, and the unit controller respectively, the manual turbine butterfly valve is located at the front side of the solenoid valve, and the manual turbine butterfly valve is connected with the solenoid valve.

[0074] The gas pressure transmitter is connected with the box-type gas engine set.

[0075] The manual turbine butterfly valve, the solenoid valve, the electric disc valve, and the gas pressure transmitter are sequentially arranged on the gas system branch pipeline of the box-type gas engine set.

[0076] In the specific implementation, please refer to Figure 2 and Figure 3, the gas inlet system pressure control device 10 mainly controls the gas inlet pressure of the gas generator set. The electric disc valve, solenoid valve, manual turbine butterfly valve and gas pressure transmitter are installed on the gas system branch line of the gas generator set. In order to solve the problem of difficult starting of the unit due to changes in gas source, the gas inlet system pressure control device 10 controls the opening angle of the electric butterfly valve to control the gas inlet amount of the generator set; according to the running state of the unit, the electric butterfly valve opening angle sets different preset values, the unit starts corresponding to the preset value 1, the unit idles corresponding to the preset value 2, and the unit runs at full speed corresponding to the preset value 3, and the preset value can be corrected according to the gas source pressure, so that the unit can have different gas inlet amounts in different states, meeting the requirements of unit starting, idling and full speed; the solenoid valve can be quickly opened / closed to control the gas inlet, and the electric butterfly valve is linked to control the gas inlet; the pressure transmitter collects the gas branch line pressure, and the gas inlet system pressure control device 10 intervenes and corrects the opening angle of the electric butterfly valve according to the gas pressure, so that the gas pressure entering the unit is within a certain range.

[0077] The electric butterfly valve is explosion-proof, and the opening angle can be fed back to the control unit by 4-20mA signal.

[0078] The manual turbine butterfly valve can be manually closed when the unit is not running for a long time or an unexpected situation occurs, including the simultaneous failure of the electric butterfly valve and the solenoid valve, to ensure that the gas inlet can be cut off.

[0079] The solenoid valve is explosion-proof, and the control mode is to open when powered on and close when powered off, which can realize rapid aeration and rapid gas cutting in emergency.

[0080] The unit running state includes: starting, idling and full speed state, starting is receiving start signal, idling is unit speed greater than 900rpm, and full speed is unit speed greater than 1450rpm.

[0081] In the specific implementation, please refer to Figure 2 , Figure 3 :

[0082] Step 1, under normal circumstances, manually open the turbine butterfly valve (1) to make it in the open state.

[0083] Step 2, the unit controller (7) communicates the unit speed data to the control unit (6) through Modbus communication; after starting, enter the control logic F100, judge whether the gas generator set (5) is running according to the unit speed, if it is in running state, enter the control logic F101, judge whether the stop signal is received, after receiving the stop signal, immediately cut off the power supply of the solenoid valve (2), and the opening angle of the electric butterfly valve (3) is set to 0; can complete the rapid gas cutting.

[0084] The gas generator set (5) is running, the unit speed is greater than 10 rpm, and the unit speed is less than 10 rpm.

[0085] Step 3, if the gas generator set (5) is not running, enter the control logic F102 to determine whether a start signal is received, and immediately open the electromagnetic valve (2) after receiving the start signal. The opening angle of the electric butterfly valve (3) is set to a preset value 1, which can be changed according to the gas source on site to control the pressure and air intake of the unit.

[0086] Step 4, the combustion gas inlet direction gas pressure transmitter (4) is installed behind the electric butterfly valve (3), and the control unit (6) monitors the gas inlet pipeline pressure in real time; control logic F103, when the gas inlet pipeline pressure is greater than the high value 1, the opening angle of the electric butterfly valve (3) is automatically reduced by 1% every 2s, until the gas inlet pipeline pressure is less than the high value 1; control logic F104, when the gas inlet pipeline pressure is less than the low value 1, the opening angle of the electric butterfly valve (3) is automatically increased by 1% every 2s, until the gas inlet pipeline pressure is greater than the low value 1; the gas inlet pipeline pressure can be corrected to avoid excessive inlet pressure or high and low exceeding the control range of the gas generator set (5) air-fuel ratio system.

[0087] The air-fuel ratio system mainly functions to accurately control the ratio of gas and air according to the gas source and the actual running state of the engine according to the pre-marked curve, to ensure the safe and stable operation of the gas generator set (5).

[0088] Step 5, enter control logic F105 to determine whether the gas generator set (5) reaches idle speed, and set the opening angle of the electric butterfly valve (3) to a preset value 2 after reaching idle speed; control logic F106, when the gas inlet pipeline pressure is greater than the high value 2, the opening angle of the electric butterfly valve (3) is automatically reduced by 1% every 2s, until the gas inlet pipeline pressure is less than the high value 2; control logic F107, when the gas inlet pipeline pressure is less than the low value 2, the opening angle of the electric butterfly valve (3) is automatically increased by 1% every 2s, until the gas inlet pipeline pressure is greater than the low value 2.

[0089] Step 6, the access control logic F108 judges whether the gas generator set (5) reaches the rated speed, and after reaching the rated speed, the opening angle of the electric butterfly valve (3) is set to a preset value 3; the control logic F109, when the gas inlet pipeline pressure is greater than the high pressure value 3, the opening angle of the electric butterfly valve (3) is automatically reduced by 1% every 2s, until the gas inlet pipeline pressure is less than the high pressure value 3; the control logic F110, when the gas inlet pipeline pressure is less than the low pressure value 3, the opening angle of the electric butterfly valve (3) is automatically increased by 1% every 2s, until the gas inlet pipeline pressure is greater than the low pressure value 3.

[0090] In the specific implementation, the inlet system pressure control device 10 controls the opening angle of the electric butterfly valve on the gas pipeline, and is linked with the electromagnetic valve on the gas pipeline to control the inlet air quantity of the generator set, so that the problem of difficult starting of the generator set due to the change of gas source can be solved, the gas requirement of the generator set in each operating state can be met, the gas pipeline pressure is collected, the opening angle of the electric butterfly valve is adjusted according to the gas pipeline pressure, and closed-loop correction is realized.

[0091] Please refer to Figure 4 , Figure 5 , the box constant temperature and pressure control device 20 comprises a box inlet air pressure sensor, a box outlet air pressure sensor, a box inlet air temperature sensor, a box outlet air temperature sensor, an inlet air louver, an outlet air louver, an axial flow fan, a heater and a second control unit.

[0092] The second control unit is connected with the box inlet air pressure sensor, the box outlet air pressure sensor, the box inlet air temperature sensor, the box outlet air temperature sensor, the inlet air louver, the outlet air louver, the axial flow fan and the heater respectively.

[0093] The box inlet air pressure sensor and the box inlet air temperature sensor are installed at the top inlet of the box-type gas engine set box; the box outlet air pressure transmitter and the box outlet air temperature sensor are installed at the top outlet of the box-type gas engine set box; the axial flow fan is installed at the box outlet of the box-type gas engine set box and adopts a strong exhaust air mode; and the heater is arranged on both sides in the box-type gas engine set box.

[0094] In the specific implementation, the cabinet constant temperature and constant pressure control device 20 is composed of a cabinet inlet air pressure sensor, a cabinet outlet air pressure sensor, a cabinet inlet air temperature sensor, a cabinet outlet air temperature sensor, an inlet air louver, an outlet air louver, an axial flow fan, a heater and the like. When the unit is started, the inlet air louver and the outlet air louver are automatically opened to a certain angle, and the axial flow fan is started at the same time. The axial flow fan keeps running, and after a time delay, the inlet air louver and the outlet air louver are controlled to open to different angles according to the detected inlet air temperature and outlet air temperature, so as to control the inlet air volume and outlet air volume of the cabinet, maintain the cabinet temperature within a certain range, and correct the opening angles of the inlet air louver and the outlet air louver according to the detected inlet air pressure and outlet air pressure, so as to ensure the air volume and heat dissipation required by the unit operation. When the unit is just stopped, the axial flow fan keeps running, first delays for a certain time, and if the average value of the cabinet is lower than the preset value, the axial flow fan stops running, and the inlet air louver and the outlet air louver are slowly closed according to the cabinet temperature. When the unit is stopped for a long time, the inlet air louver and the outlet air louver keep closed, which can effectively prevent wind sand and willow catkins from entering the cabinet, the heater is automatically started or stopped according to the average temperature of the cabinet, the cabinet temperature is maintained within a certain range, and damage to the devices in the cabinet caused by low temperature is avoided.

[0095] The inlet air louver and the outlet air louver are electric louver windows, the opening angles of which are controlled by 4-20mA signals, and the opening angles can be fed back to the control unit by 4-20mA signals.

[0096] The average temperature is the average value of the temperatures collected by the inlet air temperature sensor and the outlet air temperature sensor.

[0097] Further, please refer to Figure 4 and Figure 5 :

[0098] Step 1: The inlet air pressure transmitter (1) and the inlet air temperature sensor (2) are installed at the top inlet of the cabinet, the outlet air pressure transmitter (1) and the outlet air temperature sensor (4) are installed at the top outlet of the cabinet, the axial flow fan (6) is installed at the outlet in a strong exhaust mode, and the heater (9) is arranged in two groups on both sides of the cabinet. The control unit (5) detects the inlet air pressure, the inlet air temperature, the outlet air pressure and the outlet air temperature of the cabinet in real time through the inlet air pressure sensor (1), the inlet air temperature sensor (2), the outlet air pressure sensor (3) and the outlet air temperature sensor (4).

[0099] Step 2, after starting, enter control logic F200, judge whether the unit is running successfully, enter control logic F201 after the unit is running successfully, judge whether the stop signal is received, enter control logic F202 after the stop signal is received, at this time the axial flow fan (6) keeps running, after the stop delay 1, enter control logic F203, when the average temperature of the box is lower than the set temperature 1, the axial flow fan (6) stops running, the inlet louver (6) and the outlet louver (7) are closed slowly according to the average temperature of the box; enter control logic F204, after the stop delay 2, the opening angle of the inlet / outlet louver is set to 0, and remains closed, which can effectively prevent the wind sand and willow catkins from entering the box.

[0100] Step 3, control logic F205, when the average temperature of the box is lower than the set temperature 2, automatically start the heater (9), control logic F206, when the average temperature is greater than the set temperature 3, automatically stop the heater (9).

[0101] Step 4, if the unit is in the non-running state, enter control logic F207, judge whether there is a start signal input, after receiving the start signal, the opening angle of the inlet louver (7) is set to the preset value 1, the opening angle of the outlet louver (8) is set to the preset value 2, then the axial flow fan (6) is started, enter control logic F208, after the delay is greater than the start-up delay, adjust the opening angle of the inlet / outlet louver (7) and the outlet louver (8) through the inlet / outlet temperature, the opening angle and the temperature show corresponding linear change, for example: 10-30℃ corresponds to 0-100% opening angle.

[0102] Step 5, according to the inlet pressure, correct the opening angle of the inlet louver (7), control logic F209, when the inlet pressure is less than the low value of the inlet pressure, that is, the opening angle of the louver is too large, the inlet air quantity is too large, and the heat dissipation is too large, every 2s the opening angle of the inlet louver (7) is reduced by 1%; control logic F210, when the inlet pressure is greater than the high value of the inlet pressure, that is, the opening angle of the louver is too small, the heat dissipation is insufficient, every 2s the opening angle of the inlet louver is increased by 1%.

[0103] Step 6, according to the outlet pressure, correct the opening angle of the outlet louver (8), control logic F211, when the outlet pressure is less than the low value of the outlet pressure, every 2s the opening angle of the outlet louver (8) is reduced by 1%; control logic F212, when the outlet pressure is greater than the high value of the outlet pressure, every 2s the opening angle of the inlet louver is increased by 1%.

[0104] In specific implementation, when the unit is started, the inlet and outlet louvers are automatically opened to a certain angle, and the axial flow fan is started. The axial flow fan keeps running, and after a delay, the inlet and outlet louvers are controlled to open to different angles according to the detected inlet and outlet temperatures, so as to control the inlet and outlet air volume of the box body, maintain the box body temperature within a certain range, and correct the opening angle of the inlet and outlet louvers according to the detected inlet and outlet pressures to ensure the required air volume and heat dissipation during unit operation. When the unit is just stopped, the axial flow fan keeps running, first delays for a certain time, and if the average value of the box body is lower than the preset value, the axial flow fan stops running, and the inlet and outlet louvers are slowly closed according to the temperature of the box body. When the unit is stopped for a long time, the inlet and outlet louvers remain closed, which can effectively prevent wind sand and willow catkins from entering the box body, automatically open or close the heater according to the average temperature of the box body to maintain the box body temperature within a certain range, and avoid damage to the devices in the box body caused by low temperature.

[0105] Further, please refer to Figure 6 、 Figure 7 , the horizontal heat dissipation water tank fan control device 30 comprises:

[0106] contactor contacts, fault protection contacts, a third control unit, a control relay coil, a temperature sensor, a thermal magnetic circuit breaker, a controller relay contact, a contactor coil, and a heat dissipation fan.

[0107] The third control unit is connected to the contactor contacts, fault protection contacts, control relay coil, temperature sensor, thermal magnetic circuit breaker, controller relay contact, contactor coil, and heat dissipation fan.

[0108] Further, the horizontal heat dissipation water tank fan control device 30 further comprises an overload fault protection unit for feeding the overload fault protection contacts to the control unit. If an overload fault occurs in the heat dissipation fan, the control unit will issue an alarm and automatically switch to the next priority heat dissipation fan.

[0109] In specific implementation, the horizontal heat dissipation water tank fan control device 30 controls the start / stop of different numbers of heat dissipation fans on the horizontal heat dissipation water tank according to the water temperature of the unit cooling system, so that the water temperature is stabilized within a certain range. The contactor contact is fed back to the control unit of the horizontal fan control device as the running state of each heat dissipation fan, and the control unit counts the running time of each heat dissipation fan. According to the running time, the priority of each heat dissipation fan is set. The longer the running time, the lower the priority of the heat dissipation fan. The priority switching time is set. When the running time of the heat dissipation fan exceeds the priority switching time, it is delayed and then exits the running. The heat dissipation fan with high priority is put into operation. At the same time, each fan is provided with overload protection, and the fault protection contact is fed back to the control unit. If an overload fault occurs in a fan, an alarm is issued, and the next heat dissipation fan with high priority is automatically switched on. The orderly switching of the heat dissipation fan can be realized, the high-temperature water temperature of the unit can be maintained stable, the heat dissipation fan can be balanced, and the failure rate of the heat dissipation fan can be effectively reduced.

[0110] Specifically, please refer to Figure 7 :

[0111] Step 1, after starting, enter the control logic F300, the embodiment of the horizontal heat dissipation water tank is provided with 10 heat dissipation fans (9), the priority of the initial heat dissipation fan (9) is defined, and the priority is set as 1-10 corresponding to the number 1-10 of the heat dissipation fan (9).

[0112] Step 2, control logic F301, the control unit (3) counts the running time of each heat dissipation fan (9) respectively, which is used as the basis for priority adjustment switching.

[0113] Step 3, control logic F302, respectively judge whether the running time of each heat dissipation fan (9) is greater than the priority switching time, if yes, adjust the priority.

[0114] Step 4, control logic F303, the shorter the running time of the heat dissipation fan (9), the higher the priority, and the priority is set as 10, 9, 8, ….

[0115] Step 5, control logic F304, set the start temperature of 10 fans as start temperature 1-10, and the start temperature is increased in turn.

[0116] Step 6, the control unit (3) detects the cooling water temperature in real time through the temperature sensor (5). The control logic F305 is entered to determine whether the cooling water temperature is greater than or equal to the start temperature 1-10. If the cooling water temperature is greater than or equal to the start temperature 1-10, it is determined that it is greater than or equal to the nth start temperature, and the n priority cooling fans (9) are controlled to be started. The control unit (3) controls the corresponding relay coil (4) to be attracted, and then the corresponding contactor coil is attracted. The priority cooling fan (9) is powered on. For example, if the cooling water temperature is greater than the start temperature 1, one priority cooling fan (9) is started, i.e., the priority cooling fan (9) with a priority of 10. When the cooling water temperature is greater than the start temperature 2, two priority cooling fans (9) are started, i.e., the priority cooling fans (9) with priorities of 10 and 9. The same applies to the subsequent steps.

[0117] Step 7, if the cooling water temperature is less than the start temperature 1-10, the control logic F306 is entered. After the exit delay, the start signal of the low-priority cooling fan (9) is withdrawn. Before the start signal of the low-priority cooling fan (9) is withdrawn, the exit delay is performed to effectively avoid the frequent start and stop of the cooling fan and reduce the disturbance of the frequent start and stop of the cooling fan to the cooling water temperature.

[0118] Step 8, the control logic F307 performs fault judgment of the cooling fan (9). If the fault protection contact (2) of the controlled cooling fan (9) feeds back to the control unit (3), the cooling fan (9) has a thermal protection fault. The control unit (3) issues a corresponding fault alarm, withdraws the start signal of the cooling fan (9), and automatically starts the cooling fan (9) with the next priority.

[0119] Step 9, if the cooling fan (9) has no fault, the control logic F308 is entered to determine whether the cooling fan is running. If the contactor contact (1) of the cooling fan (9) is closed and feeds back to the control unit (3), it is determined that the cooling fan (9) is in a running state. At the same time, the control logic F301 is entered to start counting the running time of the cooling fan (9). If the contactor contact (1) of the cooling fan (9) is not closed and feeds back to the control unit (3), a corresponding automatic control failure alarm of the cooling fan (9) is issued, and the cooling fan (9) with the next priority is automatically started.

[0120] Specifically, according to the water temperature of the unit cooling system, the opening / closure of different numbers of cooling fans of the horizontal heat dissipation water tank is controlled to stabilize the water temperature within a certain range. The contactor contact of each cooling fan is fed back to the control unit of the horizontal fan control device, and the contactor contact serves as the running state of each cooling fan. The control unit counts the running time of each cooling fan, sets the priority of each cooling fan according to the running time, and the longer the running time, the lower the priority of the cooling fan. The priority switching time is set, and when the running time of the cooling fan exceeds the priority switching time, the cooling fan is automatically turned off after a delay. The cooling fan with high priority is turned on. At the same time, each fan is provided with overload protection, and the fault protection contact is fed back to the control unit. If an overload fault occurs in a fan, an alarm is issued, and the next cooling fan with high priority is automatically turned on. The orderly switching of the cooling fans can be realized, the high-temperature water temperature of the unit can be stabilized, the cooling fans can be balanced, and the failure rate of the cooling fans can be effectively reduced.

[0121] Please refer to Figure 8 , Figure 8 is a schematic diagram of the auxiliary control method steps of the box-type gas generator set according to an exemplary embodiment. The method comprises:

[0122] S1. Obtain the preset gas intake amount of the box-type gas engine set, control the gas intake pressure of the box-type gas generator set by using the preset first control method, so that the gas intake pressure value of the box-type gas generator set reaches the stable value corresponding to the preset value.

[0123] S2. Obtain the preset air inlet pressure of the box-type gas engine set, the preset air inlet temperature of the box-type gas engine set, the preset air outlet pressure of the box-type gas engine set, and the preset air outlet temperature of the box-type gas engine set. Use the preset second control method to control the temperature and pressure of the box-type gas generator set to reach the stable value corresponding to the preset value.

[0124] S3. Define the priority of the initial cooling fan, control the fan operation according to the priority, and set the overload protection to realize the balanced use of the cooling fan.

[0125] Further, the preset gas intake amount of the box-type gas engine set is obtained, the gas intake pressure of the box-type gas generator set is controlled by using the preset first control method, so that the gas intake pressure value of the box-type gas generator set reaches the stable value under the preset mode, which comprises:

[0126] According to the preset operation state of the gas generator set, different preset values are set through the preset opening angle of the electric butterfly valve; the preset values include: preset value 1 corresponding to the start of the unit, preset value 2 corresponding to the idling of the unit, and preset value 3 corresponding to the full speed of the unit.

[0127] The preset values of the opening angle of the electric butterfly valve are set according to the preset gas intake of the box-type gas engine set and the preset gas pressure transmitter, and the gas pipeline pressure is collected according to the preset gas pressure transmitter.

[0128] The opening angle of the electric butterfly valve is corrected so that the gas intake pressure value of the box-type gas engine set reaches the stable value corresponding to the preset value.

[0129] In the specific implementation, please refer to Figure 2 、 Figure 3 :

[0130] Step 1: Under normal circumstances, manually open the turbine butterfly valve (1) to be in an open state.

[0131] Step 2: The unit controller (7) communicates the unit speed data to the control unit (6) through Modbus communication; after starting, it enters the control logic F100, and judges whether the gas generator set (5) is running according to the unit speed; if it is in a running state, it enters the control logic F101, and judges whether a stop signal is received; after receiving the stop signal, the electromagnetic valve (2) power is immediately cut off, and the opening angle of the electric butterfly valve (3) is set to 0; the rapid gas cutting can be completed.

[0132] The gas generator set (5) is running, and the unit speed is greater than 10 rpm; the unit speed is less than 10 rpm, and the unit is not running.

[0133] Step 3: If the gas generator set (5) is not running, it enters the control logic F102 to judge whether a start signal is received; after receiving the start signal, the electromagnetic valve (2) is immediately opened, and the opening angle of the electric butterfly valve (3) is set to the preset value 1; the preset value 1 can be changed according to the gas source situation on site, so as to control the pressure and intake of the unit; if the on-site gas source concentration is high or the pressure is too large, the value of the preset value 1 can be appropriately reduced.

[0134] Step 4, the flammable gas inlet direction gas pressure transmitter (4) is installed behind the electric butterfly valve (3), and the control unit (6) monitors the gas inlet pipeline pressure in real time; the control logic F103 is that when the gas inlet pipeline pressure is greater than the high pressure value 1, the opening angle of the electric butterfly valve (3) is automatically reduced by 1% every 2s until the gas inlet pipeline pressure is less than the high pressure value 1; the control logic F104 is that when the gas inlet pipeline pressure is less than the low pressure value 1, the opening angle of the electric butterfly valve (3) is automatically increased by 1% every 2s until the gas inlet pipeline pressure is greater than the low pressure value 1; the gas inlet pipeline pressure can be corrected, so that the inlet pressure is prevented from being too high or high and low from exceeding the control range of the air-fuel ratio system of the gas generator set (5).

[0135] The air-fuel ratio system mainly has the function of accurately controlling the ratio of gas and air according to the gas source condition and the actual running state of the engine, and ensuring the safe and stable running of the gas generator set (5) according to the pre-marked curve.

[0136] Step 5, enter the control logic F105, judge whether the gas generator set (5) reaches the idle speed, and after the idle speed is reached, the opening angle of the electric butterfly valve (3) is set to the preset value 2; the control logic F106 is that when the gas inlet pipeline pressure is greater than the high pressure value 2, the opening angle of the electric butterfly valve (3) is automatically reduced by 1% every 2s until the gas inlet pipeline pressure is less than the high pressure value 2; the control logic F107 is that when the gas inlet pipeline pressure is less than the low pressure value 2, the opening angle of the electric butterfly valve (3) is automatically increased by 1% every 2s until the gas inlet pipeline pressure is greater than the low pressure value 2.

[0137] Step 6, enter the control logic F108, judge whether the gas generator set (5) reaches the rated speed, and after the rated speed is reached, the opening angle of the electric butterfly valve (3) is set to the preset value 3; the control logic F109 is that when the gas inlet pipeline pressure is greater than the high pressure value 3, the opening angle of the electric butterfly valve (3) is automatically reduced by 1% every 2s until the gas inlet pipeline pressure is less than the high pressure value 3; the control logic F110 is that when the gas inlet pipeline pressure is less than the low pressure value 3, the opening angle of the electric butterfly valve (3) is automatically increased by 1% every 2s until the gas inlet pipeline pressure is greater than the low pressure value 3.

[0138] In the specific implementation, the inlet system pressure control device controls the opening angle of the electric butterfly valve on the gas pipeline, and is linked with the electromagnetic valve on the gas pipeline to control the inlet air quantity of the generator set, so that the problem of difficult starting of the generator set caused by the change of the gas source can be solved, the gas requirement of the generator set in each running state can be met, the gas pipeline pressure is collected, the opening angle of the electric butterfly valve is adjusted according to the gas pipeline pressure, and closed-loop correction is realized.

[0139] Further, the obtained preset air inlet pressure of the box-type gas engine set box, the preset air inlet temperature of the box-type gas engine set box, the preset air outlet pressure of the box-type gas engine set box, and the preset air outlet temperature of the box-type gas engine set box are used to control the box-type gas generator set at constant temperature and constant pressure by using a preset second control method, so that the temperature and pressure of the box-type gas generator set reach stable values corresponding to preset values, comprising:

[0140] The preset first / second opening angle of the preset air inlet / outlet louver is adjusted by using the preset air inlet / outlet temperature of the box-type gas engine set box to obtain a first adjustment result.

[0141] The preset first / second opening angle of the preset air inlet / outlet louver is corrected by using the first adjustment result and the preset air inlet / outlet pressure of the box-type gas engine set box to obtain a second adjustment result, so that the pressure of the box-type gas generator set reaches a stable value corresponding to a preset value.

[0142] The preset heater in the box is controlled to open / close by using the average value of the preset air inlet temperature of the box-type gas engine set box and the preset air outlet temperature of the box-type gas engine set box, so that the temperature of the box-type gas generator set reaches a stable value corresponding to a preset value.

[0143] In specific implementation, further, please refer to Figure 4 and Figure 5 :

[0144] Step 1, the air inlet pressure transmitter (1) and the air inlet temperature sensor (2) are installed at the top air inlet of the box, the air outlet pressure transmitter (1) and the air outlet temperature sensor (4) are installed at the top air outlet of the box, the axial flow fan (6) is installed at the air outlet to adopt strong exhaust air, and the heater (9) is arranged in two groups on both sides of the box. The control unit (5) detects the air inlet pressure, air inlet temperature, air outlet pressure, and air outlet temperature of the box in real time through the air inlet pressure sensor (1), the air inlet temperature sensor (2), the air outlet pressure sensor (3), and the air outlet temperature sensor (4), respectively.

[0145] Step 2, after starting, enter control logic F200, judge whether the unit is running successfully, enter control logic F201 after the unit is running successfully, judge whether the stop signal is received, enter control logic F202 after the stop signal is received, at this time the axial flow fan (6) keeps running, after the stop delay 1, enter control logic F203, when the average temperature of the box is lower than the set temperature 1, the axial flow fan (6) stops running, the inlet louver (6) and the outlet louver (7) are closed slowly according to the average temperature of the box; enter control logic F204, after the stop delay 2, the opening angle of the inlet / outlet louver is set to 0, and remains closed, which can effectively prevent the wind sand and willow catkins from entering the box.

[0146] Step 3, control logic F205, when the average temperature of the box is lower than the set temperature 2, automatically start the heater (9), control logic F206, when the average temperature is greater than the set temperature 3, automatically stop the heater (9).

[0147] Step 4, if the unit is in the non-running state, enter control logic F207, judge whether there is a start signal input, after receiving the start signal, the opening angle of the inlet louver (7) is set to the preset value 1, the opening angle of the outlet louver (8) is set to the preset value 2, then the axial flow fan (6) is started, enter control logic F208, after the delay is greater than the start-up delay, adjust the opening angle of the inlet / outlet louver (7) and the outlet louver (8) through the inlet / outlet temperature, the opening angle and the temperature show corresponding linear change, for example: 10-30℃ corresponds to 0-100% opening angle.

[0148] Step 5, according to the inlet pressure, correct the opening angle of the inlet louver (7), control logic F209, when the inlet pressure is less than the low value of the inlet pressure, that is, the opening angle of the louver is too large, the inlet air volume becomes large, and the heat dissipation is too large, every 2s the opening angle of the inlet louver (7) decreases by 1%; control logic F210, when the inlet pressure is greater than the high value of the inlet pressure, that is, the opening angle of the louver is too small, the heat dissipation is insufficient, every 2s the opening angle of the inlet louver increases by 1%.

[0149] Step 6, according to the outlet pressure, correct the opening angle of the outlet louver (8), control logic F211, when the outlet pressure is less than the low value of the outlet pressure, every 2s the opening angle of the outlet louver (8) decreases by 1%; control logic F212, when the outlet pressure is greater than the high value of the outlet pressure, every 2s the opening angle of the inlet louver increases by 1%.

[0150] In a specific implementation, when the unit is started, the inlet and outlet louvers are automatically opened to a certain angle, and the axial flow fan is started. The axial flow fan keeps running. After a delay, the inlet and outlet louvers are controlled to open to different angles according to the detected inlet and outlet temperatures, so as to control the inlet and outlet air volume of the box body, maintain the temperature of the box body within a certain range, and correct the opening angle of the inlet and outlet louvers according to the detected inlet and outlet pressures to ensure the required air volume and heat dissipation during operation of the unit. When the unit is just stopped, the axial flow fan keeps running. After a delay, if the average value of the box body is lower than the preset value, the axial flow fan stops running, and the inlet and outlet louvers are slowly closed according to the temperature of the box body. When the unit is stopped for a long time, the inlet and outlet louvers are kept closed, which can effectively prevent wind sand and willow catkins from entering the box body. The heater is automatically started or stopped according to the average temperature of the box body to maintain the temperature of the box body within a certain range and avoid damage to the devices in the box body caused by low temperature. Further, the priority of the initial heat dissipation fan is defined, the fan is controlled to run according to the priority, and overload protection is provided to realize balanced use of the heat dissipation fan, including:

[0151] determining the priority of the heat dissipation fan group and the start temperature of the heat dissipation fan in the heat dissipation fan group; wherein the start temperature of the heat dissipation fan increases in turn;

[0152] in turn, it is judged whether the pre-obtained cooling water temperature is greater than or equal to the start temperature. If the pre-obtained cooling water temperature is greater than or equal to the start temperature, it is continued to be judged whether the pre-obtained cooling water temperature is greater than or equal to the nth start temperature;

[0153] If the pre-obtained cooling water temperature is less than the start temperature, the control logic is entered, and after a delay, the start signal of the heat dissipation fan with low priority is withdrawn;

[0154] If the pre-obtained cooling water temperature is greater than or equal to the nth start temperature, the start of n heat dissipation fans with higher priority is controlled. The control unit controls the corresponding relay coil to be attracted, and then the corresponding contactor coil is attracted. The heat dissipation fan with higher priority is powered on;

[0155] The preset overload fault protection of each heat dissipation fan is used to continue to judge whether each heat dissipation fan has a fault;

[0156] If the heat dissipation fan controlled to start has a fault protection contact feedback to the control unit, the heat dissipation fan has a thermal protection fault. The preset third control unit issues a corresponding fault alarm, and the start signal of the heat dissipation fan with this priority is withdrawn. The heat dissipation fan with the next priority is automatically started;

[0157] If the cooling fan is not faulty, the corresponding control logic is entered to determine whether the cooling fan is running; if the corresponding contactor contact of the cooling fan is closed and fed back to the control unit, it is determined that the cooling fan is in a running state, and the corresponding control logic is entered to start counting the running time of the cooling fan.

[0158] If the corresponding contactor contact of the cooling fan is not closed and the signal is not fed back to the control unit, an automatic control failure alarm of the corresponding cooling fan is issued, and the next priority cooling fan is automatically started.

[0159] Further, the priority of the cooling fan group is determined, comprising:

[0160] Defining the initial priority of the cooling fan in the cooling fan group;

[0161] Using the initial priority of the cooling fan, the priority of each cooling fan is modified according to the running time after the priority switching duration, and the priority of each cooling fan in the cooling fan group is determined.

[0162] Wherein, the longer the running time, the lower the priority of the cooling fan.

[0163] In specific implementation, specifically, please refer to Figure 7 :

[0164] Step 1, after starting, enter the control logic F300, and the embodiment horizontal cooling water tank is configured with 10 cooling fans (9). The initial priority of the cooling fan (9) is defined, and the priority is set to 1-10 corresponding to the cooling fan (9) number 1-10.

[0165] Step 2, control logic F301, the control unit (3) respectively counts the running time of each cooling fan (9), which is used as the basis for priority adjustment switching.

[0166] Step 3, control logic F302, respectively determine whether the running time of each cooling fan (9) is greater than the priority switching duration, if greater, the priority is adjusted.

[0167] Step 4, control logic F303, the shorter the running time of the cooling fan (9), the higher the priority, and the priority is set to 10, 9, 8, ….

[0168] Step 5, control logic F304, set the start temperature of the 10 fans, which is 1-10 in turn, and the start temperature is increased in turn.

[0169] Step 6, the control unit (3) detects the cooling water temperature in real time through the temperature sensor (5). The control logic F305 is entered to determine whether the cooling water temperature is greater than or equal to the start temperature 1-10. If the cooling water temperature is greater than or equal to the start temperature 1-10, it is determined that it is greater than or equal to the nth start temperature, and the n priority cooling fans (9) are controlled to be started. The control unit (3) controls the corresponding relay coil (4) to be attracted, and then the corresponding contactor coil is attracted. The priority cooling fan (9) is powered on. For example, if the cooling water temperature is greater than the start temperature 1, one priority cooling fan (9) is started, i.e., the priority cooling fan (9) with a priority of 10. When the cooling water temperature is greater than the start temperature 2, two priority cooling fans (9) are started, i.e., the priority cooling fans (9) with priorities of 10 and 9. The same applies to the subsequent steps.

[0170] Step 7, if the cooling water temperature is less than the start temperature 1-10, the control logic F306 is entered. After the exit delay, the start signal of the low-priority cooling fan (9) is withdrawn. Before the start signal of the low-priority cooling fan (9) is withdrawn, the exit delay is performed to effectively avoid the frequent start and stop of the cooling fan and reduce the disturbance of the frequent start and stop of the cooling fan to the cooling water temperature.

[0171] Step 8, the control logic F307 performs fault judgment of the cooling fan (9). If the fault protection contact (2) of the controlled cooling fan (9) feeds back to the control unit (3), the cooling fan (9) has a thermal protection fault. The control unit (3) issues a corresponding fault alarm, withdraws the start signal of the cooling fan (9), and automatically starts the cooling fan (9) with the next priority.

[0172] Step 9, if the cooling fan (9) has no fault, the control logic F308 is entered to determine whether the cooling fan is running. If the contactor contact (1) of the cooling fan (9) is closed and feeds back to the control unit (3), it is determined that the cooling fan (9) is in a running state. At the same time, the control logic F301 is entered to start counting the running time of the cooling fan (9). If the contactor contact (1) of the cooling fan (9) is not closed and feeds back to the control unit (3), a corresponding automatic control failure alarm of the cooling fan (9) is issued, and the cooling fan (9) with the next priority is automatically started.

[0173] Specifically, according to the water temperature of the unit cooling system, the opening / closure of different numbers of cooling fans on the horizontal heat dissipation water tank is controlled to stabilize the water temperature within a certain range. The contactor contact of each cooling fan is fed back to the control unit of the horizontal fan control device, and the contactor contact serves as the running state of each cooling fan. The control unit counts the running time of each cooling fan, sets the priority of each cooling fan according to the running time, and the longer the running time, the lower the priority of the cooling fan. The priority switching time is set, and when the running time of the cooling fan exceeds the priority switching time, the cooling fan is automatically turned off after a delay, and the cooling fan with high priority is turned on. At the same time, each fan is provided with overload protection, and the fault protection contact is fed back to the control unit. If an overload fault occurs in a fan, an alarm is issued, and the next cooling fan with high priority is automatically turned on. The orderly switching of the cooling fans can be realized, the high-temperature water temperature of the unit can be stabilized, the cooling fans can be balanced, and the failure rate of the cooling fans can be effectively reduced.

[0174] It can be understood that the same or similar parts in the above embodiments can be mutually referred to, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0175] It should be noted that, in the description of the present application, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance. In addition, in the description of the present application, unless otherwise specified, the meaning of "a plurality of" is at least two.

[0176] Any process or method descriptions in flow charts or otherwise described herein can be understood as representing code modules, segments, or portions of code which include one or more executable instructions for performing specific logic functions or steps in the process, and the various embodiments of the present application include additional implementations in which the functions described with reference to the figures are implemented by hardware, software, firmware, or combinations thereof. As such, the terms "function" and "process" are used interchangeably herein to refer to one or more functions or steps in a process and the various embodiments of the present application include additional implementations in which the functions described with reference to the figures are implemented by hardware, software, firmware, or combinations thereof.

[0177] It should be understood that the parts of the present application can be realized by hardware, software, firmware or their combination. In the above embodiments, a plurality of steps or methods can be realized by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if realized by hardware, and as in another embodiment, it can be realized by any one or their combination of the following technologies known in the art: discrete logic circuit with logic gate circuit for implementing logic function on data signal, application specific integrated circuit with suitable combination logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) and the like.

[0178] Those skilled in the art can understand that all or part of the steps of the method carried out by the above-mentioned embodiments can be instructed by a program to the relevant hardware, and the program can be stored in a computer readable storage medium. When the program is executed, it includes one of the steps of the method embodiment or a combination thereof.

[0179] In addition, each functional unit in each embodiment of the present application can be integrated into one processing module, or each unit can exist physically independently, or two or more units can be integrated into one module. The integrated module can be realized in the form of hardware or in the form of a software functional module. When the integrated module is realized in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer readable storage medium.

[0180] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0181] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0182] Although the embodiments of the present application have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. An auxiliary control method for a box-type gas generator set, characterized in that, The method is executed by an auxiliary control device for a box-type gas generator set. The device includes: an intake system pressure control device, a box-type temperature and pressure control device, and a horizontal radiator fan control device. The intake system pressure control device is installed on the gas system branch pipe of the gas generator set and is used to control the gas intake pressure of the gas generator set. The box-type temperature and pressure control device is installed at the gas vent of the gas generator set and is used to control the gas intake pressure of the box-type gas generator set. The temperature / pressure of the gas generator set reaches a stable value under the corresponding preset value; the horizontal cooling water tank fan control device is connected to the gas generator set, and the horizontal cooling water tank fan control device is used to control the opening / stop of different numbers of cooling fans on the horizontal cooling water tank to achieve balanced utilization of the cooling fans; the box constant temperature and pressure control device includes: box inlet air pressure sensor, box outlet air pressure sensor, box inlet air temperature sensor, box outlet air temperature sensor, inlet louver, outlet louver, axial flow fan, heater, and second control unit; The second control unit is connected to the box inlet air pressure sensor, box outlet air pressure sensor, box inlet air temperature sensor, box outlet air temperature sensor, inlet louver, outlet louver, axial flow fan, and heater respectively; The air inlet pressure sensor and air inlet temperature sensor are both installed at the air inlet at the top of the box-type gas generator set box; the air outlet pressure transmitter and air outlet temperature sensor are installed at the air outlet at the top of the box-type gas generator set box; the axial flow fan is installed at the air outlet of the box-type gas generator set box and adopts a forced exhaust method; the heater is arranged on both sides of the box-type gas generator set box; the horizontal radiator fan control device includes: contactor contacts, fault protection contacts, a third control unit, a control relay coil, and a temperature sensor. The device includes a thermal-magnetic circuit breaker, controller relay contacts, contactor coils, and a cooling fan. The third control unit is connected to the contactor contacts, fault protection contacts, control relay coils, temperature sensors, thermal-magnetic circuit breaker, controller relay contacts, contactor coils, and cooling fan. The horizontal cooling water tank fan control device also includes an overload fault protection unit, which feeds back the overload fault protection contacts to the control unit. If an overload fault occurs in a cooling fan, the control unit issues an alarm and automatically switches to the next priority cooling fan to start. The method includes: obtaining a preset gas intake volume of the box-type gas generator set, and using a preset first control method to control the gas intake pressure of the box-type gas generator set so that the gas intake pressure value of the box-type gas generator set reaches a stable value under the corresponding preset value. The preset air inlet pressure, air inlet temperature, air outlet pressure, and air outlet temperature of the box-type gas generator set are obtained. Using the preset second control method, the box-type gas generator set is subjected to constant temperature and pressure control so that the temperature / pressure of the box-type gas generator set reaches the stable value under the corresponding preset value. Define the preset initial priority of the cooling fans, control the operation of the fans according to the priority, and set overload protection to achieve balanced utilization of the cooling fans; The preset inlet air pressure, preset inlet air temperature, preset outlet air pressure, and preset outlet air temperature of the box-type gas generator set are obtained. Using a preset second control method, the box-type gas generator set is subjected to constant temperature and pressure control to ensure that the temperature / pressure of the box-type gas generator set reaches a stable value at the corresponding preset values. This includes: The preset first / second opening angle of the preset inlet / outlet louvers is adjusted using the preset inlet / outlet air temperature of the box-type gas generator set to obtain the first adjustment result; Using the first adjustment result, the preset first / second opening angle of the preset inlet / outlet louvers is corrected by the preset inlet / outlet air pressure of the box-type gas generator set to obtain the second adjustment result, so that the pressure of the box-type gas generator set reaches a stable value under the corresponding preset value. By using the average of the preset air inlet temperature and the preset air outlet temperature of the box-type gas generator set, the on / off state of the preset heater inside the box is controlled, so that the temperature of the box-type gas generator set reaches a stable value under the corresponding preset value; The definition of a preset initial priority for the cooling fans, controlling fan operation based on the priority and setting overload protection to achieve balanced utilization of the cooling fans, includes: The priority of the cooling fan unit and the operating temperature of the cooling fans in the cooling fan unit are determined; wherein the operating temperature of the cooling fans increases sequentially. The system sequentially determines whether the pre-obtained cooling water temperature is greater than or equal to the start temperature. If the pre-obtained cooling water temperature is greater than or equal to the start temperature, the system continues to determine whether the pre-obtained cooling water temperature is greater than or equal to the nth start temperature. If the pre-obtained cooling water temperature is lower than the start-up temperature, the control logic is entered, and after an exit delay, the start-up signal of the low-priority cooling fan is withdrawn. If the pre-obtained cooling water temperature is greater than or equal to the nth start-up temperature, then the control output will start n high-priority cooling fans. The control unit will control the corresponding relay coil to close, and then the corresponding contactor coil will close, energizing and starting the high-priority cooling fans. By utilizing the pre-set overload fault protection for each cooling fan, we can continue to determine whether each cooling fan has malfunctioned. If a fault protection contact of the cooling fan that is being controlled to be turned on sends feedback to the control unit, then the cooling fan has a thermal protection fault. The corresponding fault alarm is issued by the preset third control unit, and the start signal of this priority cooling fan is withdrawn. The next priority cooling fan is then automatically turned on. If the cooling fan is not faulty, the corresponding control logic is entered to determine whether the cooling fan is running; if the corresponding contactor contact of the cooling fan closes and feeds back to the control unit, it is determined that the cooling fan is running, and the corresponding control logic is entered to start counting the running time of the cooling fan. If the contactor contact closure signal of the corresponding cooling fan is not fed back to the control unit, an automatic control failure alarm for the corresponding cooling fan will be issued, and the next priority cooling fan will be automatically turned on.

2. The method according to claim 1, characterized in that, The process involves obtaining a preset gas intake volume for the box-type gas generator set, and using a preset first control method to control the gas intake pressure of the box-type gas generator set, so that the gas intake pressure value of the box-type gas generator set reaches a stable value under a preset mode, including: Based on the preset operating status of the gas generator set, different preset values ​​are set by the preset opening angle of the electric butterfly valve; the preset values ​​include: preset value 1 corresponding to the start-up of the unit, preset value 2 corresponding to the idling speed of the unit, and preset value 3 corresponding to the rated speed of the unit. By setting different preset values ​​for the gas intake volume of the box-type gas generator set and the opening angle of the electric butterfly valve, and by collecting the gas pipeline pressure from the preset gas pressure transmitter, the opening angle of the electric butterfly valve is corrected so that the gas intake pressure of the box-type gas generator set reaches a stable value under the corresponding preset value.

3. The method according to claim 1, characterized in that, Determining the priority of the cooling fan units includes: Define the initial priority of the cooling fans in the cooling fan unit; By utilizing the initial priority of the cooling fans, after the priority switching time, and then modifying the priority of each cooling fan according to the running time, the priority of each cooling fan in the cooling fan group is determined. Among them, the longer the running time, the lower the priority of the cooling fan.

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