CN219529434U - Hydraulic station for garbage incinerator - Google Patents

Abstract

The utility model relates to a hydraulic station, in particular to a hydraulic station for a garbage incinerator, which comprises an oil tank, an oil pump motor group, an electric heater, an oil supply pipeline and an oil return pipeline, wherein the electric heater is arranged on the oil tank to heat hydraulic oil; the hydraulic station is of an integrated design, the oil tank, the motor and the constant pressure variable pump are adjacently arranged on the same steel frame base, and the oil discharging cooler and the oil returning cooler are both arranged on the oil tank.

Description

Hydraulic station for garbage incinerator

Technical Field

The utility model relates to a hydraulic station, in particular to a hydraulic station for a garbage incinerator.

Background

The core equipment incinerator for garbage incineration treatment generally comprises a feeding system, an incineration system, an ash discharging system and the like, wherein each system is provided with a moving part, the moving part is powered by a transmission system, and whether the transmission system can stably operate is related to whether the garbage incinerator can reliably operate or not. The power source of the transmission part is driven by hydraulic pressure provided by a matched hydraulic station, the hydraulic station is a power device for realizing continuous and stable operation of the moving part of the garbage incinerator, and is key equipment of the incinerator, and an oil supply pipeline P port and an oil return pipeline T port of the hydraulic station are respectively connected with an oil supply pipeline P port and an oil return pipeline T port of a hydraulic valve table of the garbage incinerator, so that a complete hydraulic system is formed. The power element of the hydraulic station is a hydraulic pump, which has two functions, namely, the first is to provide constant pressure for the hydraulic system, namely, the pressure between the hydraulic station and the hydraulic valve table is basically constant, the pressure between the hydraulic valve table and the hydraulic cylinder can be set to be corresponding to the load of each part, and the second is to provide variable flow for the hydraulic system so as to meet the speed requirement of the hydraulic cylinders of different executing elements. Since the garbage incinerator needs to continuously run for a long time, stable and effective running of the moving parts is critical, advanced technology and stable running of the hydraulic station are required, and reliable circulating running of the driving medium-hydraulic oil is a guarantee of stable running. The hydraulic oil circulation pipeline is provided with various instrument devices, so that the hydraulic oil is required to have good fluidity, and meanwhile, the temperature cannot be too high, namely, the temperature of the hydraulic oil is required to be in a controllable stable range in operation.

However, the temperature of the hydraulic oil increases in operation, so that the hydraulic oil needs to be cooled when the temperature exceeds the temperature; in addition, at low room temperature, the hydraulic oil needs to be heated to ensure good fluidity. The hydraulic station must be provided with effective temperature control measures to ensure an overall stable operation of the hydraulic drive system. The oil temperature control of the hydraulic station for the conventional constant-pressure variable control garbage incinerator adopts an independent circulating cooling system directly connected to an oil tank to perform intermittent forced cooling on hydraulic oil until the oil temperature is reduced to a specified range. At present, the oil temperature control of the constant-pressure variable system in the garbage power plant industry adopts an independent circulating cooling system, but the independent circulating cooling system is adopted, and a set of power system (comprising a motor and a hydraulic pump) and a circulating pipeline for circulating cooling are additionally added on a basic power system, so that the manufacturing cost and the later-period running cost of a hydraulic station are increased, and unnecessary resource waste is caused.

Therefore, it is necessary to design a new hydraulic station for the garbage incinerator with an oil temperature control function, so as to solve the problem of resource waste caused by an independent circulating cooling system in the existing hydraulic station for the garbage incinerator.

Disclosure of Invention

In view of the above, the present utility model aims to provide a hydraulic station for a garbage incinerator, so as to solve the problem of resource waste caused by an independent circulating cooling system in the existing hydraulic station for the garbage incinerator.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a waste incinerator uses hydraulic pressure station, includes oil tank, oil pump motor group, electric heater, oil supply pipeline and oil return pipeline, the electric heater sets up in order to heat hydraulic oil on the oil tank, oil pump motor group and oil supply pipeline pass through hydraulic pipeline one side intercommunication, oil supply pipeline connects the oil feed inlet of the hydraulic valve platform in the waste incinerator, oil return pipeline one end is connected the oil return inlet of hydraulic valve platform, the other end is connected the oil tank to form complete hydraulic system, oil pump motor group includes motor and constant voltage variable pump, be equipped with on the constant voltage variable pump one-way be connected to the drain pipeline of oil tank, be equipped with the oil cooler on the drain pipeline in order to cool down to the hydraulic oil of oil tank that flows back in the drain pipeline, be equipped with the oil cooler on the oil return pipeline in order to cool down to the hydraulic oil of oil tank that flows back in the oil return pipeline. The hydraulic station is of an integrated design, the oil tank, the motor and the constant pressure variable pump are adjacently arranged on the same steel frame base, and the oil discharging cooler and the oil returning cooler are both arranged on the oil tank.

Further, the oil pump motor sets are two groups and are arranged in parallel between the oil tank and the oil supply pipeline.

Further, the drain line is also provided with a pipe-type check valve to prevent the reverse flow of hydraulic oil in the oil tank.

Further, an accumulator is also connected to the oil supply line to store hydraulic energy.

Further, a double-cylinder filter is arranged between the oil return cooler and the oil tank to filter the returned hydraulic oil.

Further, a shock absorbing throat is arranged between the oil tank and the oil pump motor unit so as to reduce vibration of the hydraulic pipeline.

Further, a single-cylinder filter, an electromagnetic overflow valve and a one-way valve are sequentially arranged between the oil pump motor unit and the oil supply pipeline.

Further, a water inlet and a water outlet of the oil return cooler are respectively connected with a water inlet pipe and a water outlet pipe, and an electromagnetic water valve is arranged on the water inlet pipe;

the oil tank is also provided with a temperature control component for detecting the oil temperature in the oil tank in real time, and the temperature control component is in linkage control with the electric heater and the electromagnetic water valve so as to be beneficial to realizing automatic control of the oil temperature.

Further, the oil drain cooler is arranged at the top of the oil tank.

Further, the oil return cooler is arranged on one side, away from the oil pump motor unit, of the oil tank.

The utility model has the beneficial effects that:

compared with the prior art, the utility model has the following obvious prominent substantive features and remarkable points:

1. the hydraulic station for the liquid garbage incinerator provided by the utility model has the advantages that the coolers with different cooling areas are respectively arranged on the oil discharging pipeline and the oil returning pipeline which are connected into the oil tank, and the electric heater is arranged on the oil tank, so that the effective control of the hydraulic oil temperature can be realized, the continuous and stable operation of the hydraulic station and the incinerator is ensured, and the electric heater, the electromagnetic water valve and the temperature control component are in linkage control, so that the automatic control of the oil temperature is facilitated; the oil drainage pipeline of the constant-pressure variable pump cannot share a cooler with the oil return pipeline, so that no resistance is caused in the process of oil drainage of the shell of the constant-pressure variable pump flowing back to the oil tank; the oil return cooler is directly arranged on the oil return pipeline, so that a conventional circulating cooling system with an independent oil pump is replaced, the power components and the pipeline arrangement are reduced, the interference of oil return of the circulating cooling system on oil absorption of the constant-pressure variable pump is reduced, and the manufacturing cost and the running power consumption cost of the hydraulic station are reduced; meanwhile, the fault risk and maintenance cost of the motor and the moving parts of the cooling oil pump are reduced, and the integral operation of the hydraulic station is more stable and reliable.

2. The constant-pressure variable pump is used as a power source of the hydraulic station, constant-pressure hydraulic oil can be provided for the control valve group and the hydraulic cylinder, and the hydraulic cylinder piston rod does work to drive the effective operation of the incinerator rotating part, so that the hydraulic station has strong functionality and stable and reliable operation; the single-cylinder filter is arranged on the oil outlet pipeline of the hydraulic station, the double-cylinder filter is arranged on the oil return pipeline, the cleanliness and quality of hydraulic oil in the pipeline are effectively improved, stable and reliable operation of hydraulic components driven by the incinerator is ensured, the hydraulic components are not easy to damage, and the service life is prolonged; the oil outlet and the oil return of the hydraulic station adopt the same oil tank, the motor and the oil pump are adjacently arranged on the same installation base, other components are arranged on the oil tank, the overall layout of the hydraulic station is compact, the occupied space is small, and the overhaul and the maintenance are convenient. Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in the following preferred detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of an oil circuit of a hydraulic station for a garbage incinerator in an embodiment;

fig. 2 is a schematic structural view of a hydraulic station for a garbage incinerator according to an embodiment;

FIG. 3 is a left side view of FIG. 2;

fig. 4 is a top view of fig. 2.

Reference numerals: the oil tank 1, the temperature control assembly 2, the electric heater 3, the liquid level thermometer 4, the air filter 5, the electronic liquid level relay 6, the butterfly valve 7, the shock absorbing throat 8, the motor 9, the constant pressure variable pump 10, the single cylinder filter 11, the pressure gauge 12, the electromagnetic overflow valve 13, the steel ball type check valve 14, the energy accumulator 15, the overflow valve 16, the pressure sensor 17, the pipe type check valve 18, the oil discharging cooler 19, the oil returning cooler 20, the electromagnetic water valve 21, the double cylinder filter 22, the switch valve 23, the oil supplying pipeline 24, the oil returning pipeline 25 and the ball valve 26.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present utility model by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.

Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the utility model; for the purpose of better illustrating embodiments of the utility model, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present utility model, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 to 4, the hydraulic station for a garbage incinerator comprises an oil tank 1, an oil pump motor unit, an electric heater 3, an oil supply pipeline 24 and an oil return pipeline 25, wherein the electric heater 3 is arranged on the oil tank 1 to heat hydraulic oil, the oil tank 1, the oil pump motor unit and the oil supply pipeline 24 are communicated through one side of the hydraulic pipeline, the oil supply pipeline 24 is connected with an oil supply port of a hydraulic valve table in the garbage incinerator, one end of the oil return pipeline 25 is connected with an oil return port of the hydraulic valve table, and the other end of the oil return pipeline 25 is connected with the oil tank 1 to form a complete hydraulic system; the oil pump motor group comprises a motor 9 and a constant pressure variable pump 10, the constant pressure variable pump 10 is provided with an oil drain pipeline which is connected to the oil tank 1 in a one-way, the oil drain pipeline is provided with an oil drain cooler 19 for cooling hydraulic oil flowing back to the oil tank 1 in the oil drain pipeline, and the oil return pipeline 25 is provided with an oil return cooler 20 for cooling hydraulic oil flowing back to the oil tank 1 in the oil return pipeline 25.

Further, the oil pump motor sets are two sets and are arranged in parallel between the oil tank 1 and the oil supply line 24.

Further, the drain line is also provided with a pipe-type check valve 18 to prevent the reverse flow of hydraulic oil in the tank 1.

Further, an accumulator 15 is connected to the oil supply line 24 to store hydraulic energy.

Further, a double-cylinder filter 22 is provided between the oil return cooler 20 and the oil tank 1 to filter the returned hydraulic oil.

Further, a shock absorbing throat 8 is further arranged between the oil tank 1 and the oil pump motor unit so as to reduce vibration of the hydraulic pipeline.

Further, a single-cylinder filter 11, an electromagnetic relief valve 13, and a ball-type check valve 14 are provided in this order between the oil pump motor unit and the oil supply line 24.

Further, the water inlet and the water outlet of the oil return cooler 20 are respectively connected with a water inlet pipe and a water outlet pipe, and an electromagnetic water valve 21 is arranged on the water inlet pipe;

the oil tank 1 is also provided with a temperature control component 2 for detecting the oil temperature in the oil tank 1 in real time, and the temperature control component 2, the electric heater 3 and the electromagnetic water valve 21 are in linkage control so as to be beneficial to realizing automatic control of the oil temperature.

Specifically, the hydraulic station comprises an oil tank 1, a constant pressure variable pump 10 group, an oil suction pipeline, an oil drain pipeline, an oil outlet pipeline, an oil supply pipeline 24 and an oil return pipeline 25, and all the units are connected with various hydraulic elements and meters through pipelines. The oil tank 1 adopts a cuboid structure, is made of stainless steel, is provided with supporting legs below and is used for containing hydraulic oil, and is a place for oil outlet and oil return of a hydraulic station. The bottom surface of the box body adopts inclined surface arrangement, and the ball valve 26 is arranged below the side surface of the low end, so that the hydraulic oil can be completely discharged and cleaned. The electronic liquid level relay 6 is arranged on the upper portion of the oil tank 1, so that the liquid level in the oil tank 1 can be transmitted to the central control room in real time, the monitoring of the liquid level in the oil tank 1 is realized, when the liquid level is at a low liquid level set value, the electronic liquid level relay 6 can send a low liquid level signal to the central control room, and when the liquid level is lower than an ultralow liquid level set value, the system can automatically stop, so that the system is protected. An electric heater 3 associated with the temperature control assembly 2 is arranged at the middle lower part of the oil tank 1, so that the hydraulic oil can be automatically heated on line. The oil tank 1 is internally provided with a temperature control component 2 which can detect the oil temperature in the oil tank 1 in real time and remotely transmit the oil temperature to the DCS system, and realize linkage control with a motor 9 of a constant pressure variable pump 10, an alarm, an electric heater 3 and an electromagnetic water valve 21, wherein the alarm is arranged on the oil tank 1 (shown in the figure).

The oil pump motor unit comprises a constant pressure variable pump 10 and a low noise motor 9, is a power element of the hydraulic station and is also a core component of the hydraulic station, constant pressure and variable flow are provided for the hydraulic station, the flow change is variable supply according to the operation requirement of the hydraulic cylinder, the system flow is ensured to be almost zero under the condition of no load, the motor 9 processes no-load operation, the energy consumption is reduced, and the system operation is reliable. The two constant pressure variable pumps 10 are arranged according to the system requirement, one is used for one in operation, so that the emergency fault is prevented from influencing the operation of the hydraulic station, the two devices can be alternately used in operation, and the service life of the devices is prolonged.

The oil suction pipeline is led out from the lower side of the high-end side surface of the oil tank 1, a butterfly valve 7 and a shock absorbing throat 8 are arranged on the oil suction pipeline, manual opening and closing of the oil suction pipeline connected with the constant-pressure variable pump 10 can be realized, and a limit switch is arranged on the butterfly valve 7 to realize chain protection of a motor 9 of the constant-pressure variable pump 10, namely, when the butterfly valve 7 is opened, a limit switch signal is switched on, the motor 9 can be started, and when the butterfly valve 7 is closed, the limit switch signal is switched off, and the motor 9 cannot be started.

The leakage liquid of the oil leakage pipeline flows out from the oil leakage port of the constant pressure variable displacement pump 10 and flows back to the oil tank 1 through the one-way valve 18 and the oil leakage cooler 19. Because the drain temperature of the constant pressure variable pump 10 casing is higher, the drain pipeline is provided with a tubular one-way valve 18 and a tubular oil cooler as the drain cooler 19, the tubular one-way valve 18 is used for blocking the leakage flow of the casing of one constant pressure variable pump 10 to the casing of the other pump, the drain cooler 19 continuously cools the casing drain of the constant pressure variable pump 10, the cooling area of the drain cooler 19 can reasonably select the model of the cooler according to the casing drain quantity and the temperature change of the constant pressure variable pump 10 so as to ensure that the oil temperature of the casing leakage liquid of the constant pressure variable pump 10 is controlled within a specified range, and the water inlet pipeline and the water outlet pipeline of the cooler are respectively provided with a switch valve 23, so that the manual switching of the cooling water can be realized, and the water inlet switch valve 23 of the cooler can be closed when the oil temperature is too low in the oil tank 1 in cold weather when the hydraulic station is started for the first time. The key point of this embodiment is that the drain lines of the two constant pressure variable displacement pumps 10 are joined together through the pipe-type check valve 18 and then enter the cooler at the top of the oil tank 1 and then flow back to the oil tank 1.

The oil outlet pipeline is led out by the oil outlet of the constant pressure variable pump 10, the oil outlet pipeline is provided with an inverted high-pressure single-cylinder filter 11, oil can not overflow when the filter element is convenient to detach, the cleanliness of the hydraulic oil is improved after the hydraulic oil is purified by the high-pressure single-cylinder filter 11, the valve element of a control valve in a control element is not easy to be blocked, the service life of a hydraulic cylinder sealing ring is prolonged, the operation reliability of the whole hydraulic system is improved, a pressure transmitter and a bypass valve are arranged on the high-pressure single-cylinder filter 11, when the filter element is polluted and blocked to the pressure difference of an oil inlet and outlet of 0.35MPa, a switching signal is sent, so that the filter element blocking signal on a local PLC cabinet and a DCS can not be timely replaced, and meanwhile, when the pressure difference of the oil inlet and outlet of the oil inlet is further increased to 0.4MPa, the bypass valve automatically works, and the filter element and the system are protected to work normally. An electromagnetic overflow valve 13 is arranged behind the high-pressure single-cylinder filter 11, so that the system pressure can not exceed the set pressure, the system is prevented from being excessively high, and the safety protection effect is achieved. The oil outlet pipeline is provided with a steel ball type one-way valve 14 behind the electromagnetic overflow valve 13, so as to prevent hydraulic oil from flowing back into the other constant pressure variable pump 10 to damage the backup oil pump.

The oil supply pipeline 24 is provided with the energy accumulator 15, the matched overflow valve 16 and the switch valve 23, the outlet of the overflow valve 16 is connected with the oil return tank 1, the energy accumulator 15 has the functions of being used as an emergency power source, supplementing the flow of the system, keeping the constant pressure of the system, absorbing hydraulic impact and reducing noise, and improving the operation quality of the hydraulic station. The oil supply pipeline 24 is also provided with a pressure sensor 17, so that the system pressure can be remotely transmitted to a central control room, and the change condition of the system pressure can be conveniently and remotely monitored.

The outlet end (P port) of the oil supply pipeline 24 is used as an interface for outputting the hydraulic station outwards, and the interface is connected to an oil inlet (an oil supply port of a hydraulic valve table) of each motion unit control valve table group of the incinerator through a pipeline, and each valve group is connected with a corresponding hydraulic cylinder through a double pipeline, so that oil supply and oil return of the hydraulic cylinder are realized. The pressurized hydraulic oil drives the moving parts of the incinerator by pushing the piston rod to reciprocate under the control of the valve group.

The oil return ports of the valve groups are converged and then connected to an oil return pipeline 25 (T port) of the hydraulic station through the same pipeline (the oil return port of the hydraulic valve table). The oil return cooler 20 is arranged on the oil return pipeline 25 of the hydraulic station, the matched cooler model is selected according to comprehensive calculation of the flow, the temperature, the water inlet temperature and the like of hydraulic oil in the oil return pipeline 25, the water inlet pipeline and the water outlet pipeline of the oil return cooler 20 are respectively provided with the switch valve 23, manual switching of cooling water can be achieved, meanwhile, the electromagnetic water valve 21 associated with the oil temperature (temperature control assembly 2) in the oil tank 1 is arranged on the water inlet pipeline, automatic control of the cooling water is achieved, and a cooling function is provided according to requirements.

The oil return pipeline 25 is also provided with a double-cylinder filter 22 before entering the oil tank 1 through the upper cover of the oil tank 1, filtering and purifying the oil return, ensuring that the cleanliness of hydraulic oil meets the system requirement, wherein the double-cylinder filter 22 is provided with a signaling device, and when the pressure difference between the oil inlet and the oil outlet of the filter element is 0.35MPa due to pollution blockage of the filter element, a switch signal is sent out, so that the alarm of the filter element blockage signals on the on-site PLC cabinet and the DCS is realized, the blocked filter element can be replaced under the condition that the system is not stopped by the double-cylinder oil return filter, and the continuous working state of a garbage power plant is met; the double-cylinder oil return filter is also provided with a bypass valve, and when the blocked filter element cannot be replaced in time due to reasons, the bypass valve automatically works when the pressure difference of the oil inlet and the oil outlet is further increased to 0.4MPa, so that the filter element and the system are protected to work normally. When the oil return cooling is abnormal or the room temperature is too low, the oil tank 1 detects that the oil temperature is higher than or lower than the set critical temperature, the alarm gives out an accident alarm model, and meanwhile, the oil pump of the motor 9 stops running, so that the protection equipment is damaged. Meanwhile, the alarm can set a plurality of groups of early warning signals related to the detected oil temperature, so that the running state of the hydraulic station is comprehensively monitored, and the reliable running of hydraulic driving is realized.

Example 1

In this embodiment, a downward-inserted temperature control component 2 is disposed above the oil tank 1, a detection signal can be remotely transmitted to a control system interface, 3 groups of electric heaters 3 are disposed on the side surface of the oil tank 1, the electric heaters 3 and the temperature control component 2 realize associated control, when the oil temperature in the oil tank 1 is detected to be less than 15 ℃, the electric heaters 3 are started to heat hydraulic oil in the oil tank 1, and when the oil temperature is raised to 25 ℃, the electric heaters 3 stop heating. The temperature control assembly 2 has an alarm function at the same time, and when the oil temperature of the hydraulic station is more than 60 ℃, a high-temperature alarm is sent out. The side wall of the hydraulic station oil tank 1 is provided with an on-site liquid level thermometer 4, so that the temperature of the hydraulic oil in the oil tank 1 can be directly read on site and the liquid level height can be observed. The top surface of the oil tank 1 is provided with an air filter 5, so that the air environment requirement of the oil tank 1 is met, and the air filter is also used as a refueling interface of hydraulic oil of the oil tank 1 to realize refueling and oil supplementing of the oil tank 1. The top surface of the oil tank 1 is simultaneously provided with an electronic liquid level relay 6 for liquid level real-time monitoring and data remote transmission. The oil tank 1 is provided with two identical oil pump motor sets, one for one, can realize signal remote transmission and remote control, and two paths of oil pump motor sets which fail can be automatically switched, and can also be periodically switched according to the running condition. The outlet pipeline of the oil tank 1 is provided with a butterfly valve 7 with a travel switch, and a shock absorbing throat 8 for absorbing running shock is arranged behind the butterfly valve 7. And a motor 9 and a constant-pressure variable oil pump are arranged on a pipeline behind the shock absorbing throat 8, so that the pressurizing output of the oil tank 1 for feeding oil outwards is realized. The parameters of the motor 9 are 380V asynchronous motors, damping strips are arranged below the motor 9 and are connected with an oil pump through a coupling, a bell jar is additionally used for protection, the displacement of the constant-pressure variable pump 10 can be designed and selected according to the flow required by a hydraulic station of the incinerator and the rotating speed of the motor 9, and the working pressure of a hydraulic station system is 18MPa.

The oil pump outlet is connected with a subsequent oil outlet filter through a rubber tube, and an on-site vibration-resistant pressure gauge 12 with a switch is installed in the subsequent oil outlet filter, so that the oil outlet pressure of the oil pump can be detected and displayed in real time. Meanwhile, an electromagnetic overflow valve 13 is arranged, the protection pressure is set to 21MPa, and the damage to subsequent pipeline instrument equipment caused by the fact that the outlet pressure of the constant-pressure variable pump 10 is too high and exceeds the set pressure of the system is prevented. The overflow port of the electromagnetic overflow valve 13 is directly connected back to the oil tank 1, a steel ball type one-way valve 14 is arranged on the pipeline, the mutual backflow of two oil pump pressurizing pipelines is prevented from influencing the operation, and the two pipelines are converged after the steel ball type one-way valve 14 to form an oil supply pipeline 24 to the hydraulic valve platform, so that a standby function is realized.

The oil supply pipeline 24 is provided with an accumulator 1515, a volume of 25L and a maximum pressure of 31.5MPa, the front end of the accumulator 15 is provided with a high-pressure switch and an overflow valve 16 in a matched mode, the pressure of the overflow valve 16 is set to 21MPa, and the overflow port directly returns to the oil tank 1; the overflow valve 16 can meet the overflow pressure relief of the accumulator 15, and is convenient for installation and maintenance. Meanwhile, the pressure sensor 17 is arranged on the oil supply pipeline 24, so that remote transmission and monitoring of the pressure parameters of the oil supply pipeline 24 can be realized in real time, and the lower limit set value of the alarm pressure is 10MPa.

The oil supply pipeline 24 is connected with an oil supply port of a hydraulic valve table, the hydraulic valve table consists of a valve table frame, a control valve group and pipeline accessories, an oil port A, B of each valve group is connected with a corresponding actuator hydraulic cylinder through a high-pressure rubber pipe and a stainless steel pipe, oil supply and oil return are continuously switched through valve group control, further work is performed on a piston rod of the hydraulic cylinder, and the piston rod reciprocates to drive various transmission parts of the incinerator to realize functional operation. The return lines 25 of the valve stand control group merge into return lines 25 which return to the hydraulic tank 1.

The two constant pressure variable pumps 10 are both provided with oil drainage pipelines, and normally drain oil from the oil pump housing in operation and return the oil to the oil tank 1. The two oil drain pipelines are respectively provided with a tubular one-way valve 18, so that the two oil drain pipelines are prevented from mutually flowing back to influence the normal operation of the constant-pressure variable pump 10. The two oil drain pipelines are connected into the oil tank 1 after being converged, the oil drain cooler 19 is arranged on the front pipeline of the oil inlet tank 1, the water inlet pipeline and the water outlet pipeline of the oil drain cooler 19 are both provided with the switch valve 23, the on-site opening and closing control of cooling water can be realized, the cooling water flow rate can be selected according to the oil drain amount of the constant-pressure variable pump 10 and the cooling area design of the cooler, and the oil drain temperature is generally higher, so that the cooling water in the cooling water running of the oil drain tank is in a normally open state.

The oil return pipeline 25 is directly provided with the oil return cooler 20, the flow of cooling water can be selected according to the power of the motor 9 and the cooling area design of the cooler, and the water inlet pipeline and the water outlet pipeline of the cooler are both provided with the switch valve 23, so that the on-site switching control of the cooling water can be realized. Meanwhile, an electromagnetic water valve 21 is arranged on the water inlet pipeline, so that signal remote transmission and remote control can be realized; the electromagnetic water valve 21 and the temperature control assembly 2 on the oil tank 1 realize associated control, and when the oil temperature in the oil tank 1 is detected to be more than 55 ℃, the electromagnetic water valve 21 is opened to realize water inlet and cooling oil return; when the oil temperature drops to 40 ℃, the electromagnetic water valve 21 is closed to stop water inflow and cooling. The double-cylinder filter 22 with remote transmission signals is arranged before the oil return pipeline 25 enters the oil tank 1, so that remote monitoring and online filter core replacement can be realized according to filter core blocking signals, and the maintenance is convenient. The stainless steel ball valve 26 is arranged on the side surface of the lower end of the oil tank 1, which is close to the bottom plate surface, so that the hydraulic oil in the oil tank 1 can be discharged and cleaned.

The hydraulic station adopts integrated design, and oil tank 1, motor 9 and constant voltage variable pump 10 are adjacent to be arranged on same steelframe base, and other instrument equipment, cooler and pipeline are all concentrated to be arranged in different positions on oil tank 1, and whole overall arrangement is compact reasonable, and occupation space is few. The lifting hook is arranged on the base of the hydraulic station, so that the whole delivery can be realized, and the installation and the use are convenient.

On the other hand, the embodiment also provides an oil temperature control method of the hydraulic station for the garbage incinerator, and the oil temperature control method of the hydraulic station for the garbage incinerator is as follows:

s1: when the hydraulic station starts to operate, the oil discharging cooler 19 is in a normally open state, when the oil temperature in the oil tank 1 exceeds a first preset value, the oil returning cooler 20 is opened, the oil returning cooler 20 is closed by cooling the hydraulic oil in the oil discharging pipeline and the oil returning pipeline 25, and when the oil temperature in the oil tank 1 is reduced to a second preset value, the oil discharging cooler 19 is kept open to maintain the oil temperature;

s2: when the initial oil temperature before the hydraulic station is started is lower than a third preset value, the oil discharging cooler 19 and the oil returning cooler 20 are closed, the electric heater 3 is used for heating the hydraulic oil in the oil tank 1, and when the oil temperature in the oil tank 1 is increased to a fourth preset value, the electric heater 3 is closed, and the oil discharging cooler 19 is opened to maintain the oil temperature.

Specifically, the first preset value is 55 ℃, the second preset value is 40 ℃, the third preset value is 15 ℃, the fourth preset value is 25 ℃, and the temperature preset value can be adaptively adjusted within a reasonable range according to the requirement.

Further, the water inlet and the water outlet of the oil return cooler 20 are respectively connected with a water inlet pipe and a water outlet pipe, an electromagnetic water valve 21 is arranged on the water inlet pipe, a temperature control assembly 2 is further arranged on the oil tank 1 to detect the oil temperature in the oil tank 1 in real time, and the temperature control assembly 2 is in linkage control with the electric heater 3 and the electromagnetic water valve 21;

the temperature control assembly 2 automatically detects the oil temperature in the oil tank 1, and cooperates with the electric heater 3 and the electromagnetic water valve 21 to control the manual start and stop of the oil discharge cooler 19 in a linkage manner, so as to realize stable control of the oil temperature.

Oil temperature linkage control requirement: when the initial oil temperature before the start of the hydraulic station is lower than the set temperature by 15 ℃, the electric heater 3 starts to heat the hydraulic oil in the oil tank 1 until the oil temperature rises to the set temperature by 25 ℃, stops heating, and starts the oil discharging cooler 19 to be started to maintain the oil temperature. In the operation of the hydraulic station, when the oil tank 1 detects that the oil temperature is higher than the set temperature of 55 ℃, the electromagnetic water valve 21 of the oil return cooler 20 is automatically opened to cool the oil temperature until the oil temperature is reduced to the set temperature of 40 ℃, the electromagnetic water valve 21 is closed, and the oil discharge cooler 19 is kept open to maintain the oil temperature. In the hydraulic station operating state, the oil cooler 19 is normally opened.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims of the present utility model.

Claims (10)

1. The utility model provides a hydraulic pressure station for garbage incinerator, includes oil tank, oil pump motor group, electric heater, oil supply pipeline and returns the oil line, electric heater sets up in order to heat hydraulic oil on the oil tank, oil pump motor group and oil supply pipeline pass through hydraulic pressure pipeline one side intercommunication, the oil supply pipeline is connected the oil feed mouth of the hydraulic valve platform in the garbage incinerator, return oil line one end is connected the oil return mouth of hydraulic valve platform, the other end is connected the oil tank, in order to form complete hydraulic system, its characterized in that: the oil pump motor group comprises a motor and a constant-pressure variable pump, wherein the constant-pressure variable pump is provided with an oil drain pipeline which is connected to the oil tank in a one-way, the oil drain pipeline is provided with an oil drain cooler for cooling hydraulic oil which flows back to the oil tank in the oil drain pipeline, and the oil return pipeline is provided with an oil return cooler for cooling hydraulic oil which flows back to the oil tank in the oil return pipeline;

the hydraulic station is of an integrated design, the oil tank, the motor and the constant pressure variable pump are adjacently arranged on the same steel frame base, and the oil discharging cooler and the oil returning cooler are both arranged on the oil tank.

2. A hydraulic station for a waste incinerator according to claim 1, characterized in that: the oil pump motor sets are two groups and are arranged in parallel between the oil tank and the oil supply pipeline.

3. A hydraulic station for a waste incinerator according to claim 1, characterized in that: the drain line is also provided with a tubular one-way valve to prevent reverse flow of hydraulic oil in the tank.

4. A hydraulic station for a waste incinerator according to claim 1, characterized in that: the oil supply pipeline is also connected with an energy accumulator for storing hydraulic energy.

5. A hydraulic station for a waste incinerator according to claim 1, characterized in that: and a double-cylinder filter is arranged between the oil return cooler and the oil tank to filter the returned hydraulic oil.

6. A hydraulic station for a waste incinerator according to claim 1, characterized in that: and a shock absorbing throat is further arranged between the oil tank and the oil pump motor unit so as to reduce vibration of the hydraulic pipeline.

7. A hydraulic station for a waste incinerator according to claim 1, characterized in that: a single-cylinder filter, an electromagnetic overflow valve and a one-way valve are sequentially arranged between the oil pump motor unit and the oil supply pipeline.

8. A hydraulic station for a waste incinerator according to claim 1, characterized in that: the water inlet and the water outlet of the oil return cooler are respectively connected with a water inlet pipe and a water outlet pipe, and an electromagnetic water valve is arranged on the water inlet pipe;

the oil tank is also provided with a temperature control component for detecting the oil temperature in the oil tank in real time, and the temperature control component is in linkage control with the electric heater and the electromagnetic water valve so as to be beneficial to realizing automatic control of the oil temperature.

9. A hydraulic station for a waste incinerator according to claim 1, characterized in that: the oil drain cooler is arranged at the top of the oil tank.

10. A hydraulic station for a waste incinerator according to claim 1, characterized in that: the oil return cooler is arranged on one side, far away from the oil pump motor unit, of the oil tank.