An online cooling device for local EH oil system equipment

Abstract

The present invention relates to the technical field of cooling devices, and specifically to an online cooling device for local EH oil system equipment, including a cooling box and a discharge pipe, wherein a circulating heat absorption component, two partition plates, two blocking plates, an inner tube and a forward and reverse motor are arranged inside the cooling box, and a filter alarm component is arranged outside the blocking plate, wherein the filter alarm component includes a filter screen, a collection box and two pressure relief valves, and a pressure sensor is arranged on one side of a pressure relief valve close to the discharge pipe, and the pressure sensor is electrically connected to an alarm. When the temperature of the EH oil in the invention is lower than the required range, the three-way valve electrically connected to the second temperature sensor works, and the high-temperature EH oil can flow to the three-way valve inside the inner tube, and the low-temperature EH oil in the cooling box that has been cooled by the spiral tube exchanges heat with the high-temperature EH oil flowing inside the inner tube, thereby shortening the time and intensity of the heat exchange of the high-temperature EH oil, avoiding the EH oil supplied to the equipment cooling system from being lower than the required temperature, and avoiding damage to the equipment cooling system.

Description

Technical Field

[0001] The invention relates to the technical field of cooling devices, and in particular to an online cooling device for local EH oil system equipment. Background Art

[0002] Among the hydraulic fluids used in the hydraulic control system of steam turbines, phosphate ester fire-resistant oil occupies a major position. Phosphate ester fire-resistant oil is generally referred to as EH oil. The operating temperature of EH oil is required to be controlled between 35℃ and 55℃. Cooling water is required for cooling in summer, and electric heating or infrared heating is required in winter. The local temperature during heating cannot be too high, otherwise it will cause the EH oil quality to deteriorate.

[0003] For example, the patent document with patent application number: 201910013073.7 discloses a steam turbine EH oil heating system and method. It relates to the field of heating technology. By cleverly combining and applying the steam turbine EH oil, the oil temperature thermometer, and the processing device electrically connected to the oil temperature thermometer, based on the preset steam turbine EH oil temperature range, the temperature of the steam turbine EH oil can be more flexibly controlled within the required range, so as to improve the flexibility of steam turbine EH oil heating.

[0004] When the temperature of EH oil is controlled, although it is filtered, the impurities generated by the EH oil and the clogging of the filter structure are not dealt with. When the filter structure is clogged due to the accumulation of impurities, it will affect the smoothness of the EH oil circulation system and even cause damage to the EH oil system. Summary of the invention

[0005] To solve the above problems, the present invention is implemented through the following technical solutions: an online cooling device for local EH oil system equipment, including a cooling box and a discharge pipe, a circulating heat absorption component, two partition plates, two blocking plates, an inner tube and a forward and reverse motor are arranged inside the cooling box, a filter alarm component is arranged on the outer side of the blocking plate, the filter alarm component includes a filter screen, a collection box and two pressure relief valves, the filter alarm component can not only filter the EH oil and slow down its aging speed, but also can alarm after the EH oil deteriorates to a certain length, thereby increasing the practicality of the cooling device, a pressure sensor is arranged on one side of a pressure relief valve close to the discharge pipe, and the pressure sensor is electrically connected to the alarm; a transmission rod is arranged inside the inner tube, a plurality of sealing frames are arranged on the outer side of the fixed sleeve of the transmission rod, and the plurality of sealing frames are arranged on the outer side There is a water inlet groove, and a first temperature sensor is fixedly connected to one side of a sealing frame close to the forward and reverse motors. The first temperature sensor is electrically connected to an emergency component. When the temperature of the EH oil flowing inside the inner tube and contacting the first temperature sensor is still lower than the required working temperature range, the emergency component electrically connected to the first temperature sensor works to adjust the temperature of the EH oil, so that the EH oil supplied to the equipment cooling system meets the working requirements. A three-way valve is fixedly connected to one side of the cooling box, and a second temperature sensor is fixedly connected to one side of the three-way valve. The second temperature sensor monitors the temperature of the EH oil discharged through the discharge pipe in real time through a probe, so that the high-temperature EH oil with different contact time with multiple spiral tubes enters the inner tube, and the temperature of the EH oil output by the three-way valve is controlled. The emergency component is arranged between the normally closed end of the three-way valve and the inner tube.

[0006] In some specific embodiments, the discharge pipe is fixedly connected to one side of the top of the cooling box, the circulating heat absorption component includes a heat exchanger, the water inlet and outlet ends of the heat exchanger are fixedly connected to a guide elbow, one end of the guide elbow is fixedly connected to a diversion box, and a plurality of spiral tubes are fixedly connected between the two diversion boxes. Cold water flows inside the plurality of spiral tubes to cool down the high-temperature EH oil passing through the cooling box, and the plurality of spiral tubes pass through two partition plates and two blocking plates.

[0007] In some specific embodiments, a bottom groove is formed at the bottom of the two partition plates, and a top groove is formed at the top of the two blocking plates. The two partition plates and the two blocking plates are fixedly connected to the inside of the cooling box. Since the top groove and the bottom groove are arranged one above the other, the partition plates and the blocking plates form a stepped channel inside the cooling box, which increases the time for the high-temperature EH oil to contact the spiral tube for heat exchange, and multiple spiral tubes are evenly distributed at various positions inside the cooling box to ensure uniform cooling of the high-temperature EH oil. A short pipe is fixedly connected between the normally open end of the three-way valve and the cooling box, and a discharge pipe is fixedly connected to one side of the three-way valve. The second temperature sensor includes a probe, and the bottom end of the probe extends into the discharge pipe. The equipment cooling system extracts the cooled EH oil from the cooling box through the discharge pipe, the three-way valve and the short pipe.

[0008] In some specific embodiments, the inner tube passes through two partition plates and two blocking plates, the forward and reverse motors are fixedly connected to the inside of the cooling box, the transmission rod is fixedly connected to the output end of the forward and reverse motors, and the water inlet groove is opened at the top of the outer side of the inner tube. The high-temperature EH oil entering the cooling box enters the inner tube through the water inlet groove. Multiple sealing frames have gaps, and the high-temperature EH oil can flow from the inside of the inner tube to the three-way valve.

[0009] In some specific embodiments, a normally closed end of the three-way valve is fixedly connected to a heat preservation tube, and a one-way valve is fixedly connected between the heat preservation tube and the inner tube.

[0010] In some specific embodiments, the first aid component is arranged inside the insulation pipe, and the first aid component includes an electric heating wire. A cross plate is fixedly connected between the electric heating wire and the insulation pipe. The electric heating wire installed by the cross plate works, and the working electric heating wire heats the EH oil entering the three-way valve through the insulation pipe.

[0011] In some specific embodiments, a square hole is opened on one side of the blocking plate, the pressure relief valve is arranged inside the square hole and fixedly connected to the blocking plate, the water inlet and outlet of the pressure relief valve are fixedly connected to water pipes, the EH oil is too turbid, the EH oil hydraulic pressure increases and enters the pressure relief valve from the water pipe to open the pressure relief valve, so that the EH oil can be normally circulated and cooled, the pressure sensor is fixedly connected to one of the water pipes, the pressure sensor detects the hydraulic pressure of the EH oil, the alarm works outside the cooling box and sounds an alarm, and the alarm is fixedly connected to the bottom of one side of the three-way valve.

[0012] In some specific embodiments, the filter screen is tilted inside the top groove and fixedly connected to the blocking plate, a storage groove is opened on one side of the blocking plate, a collection box is arranged inside the storage groove, and the collection box is arranged on one side of the bottom of the filter screen. The filter screen is in a tilted state with the top facing the direction in which the EH oil flows, and impurities filtered out by the filter screen fall into the storage groove.

[0013] In some specific embodiments, one end of the collection box is fixedly connected to a mounting shaft, a fixing bolt is provided on the outer side of the mounting shaft for rotation, a threaded hole is provided on one side of the cooling box, the fixing bolt passes through the threaded hole and is threadedly connected to the cooling box, and after the fixing bolt is rotated out of the threaded hole, the collection box leaves the interior of the cooling box through the threaded hole.

[0014] The present invention provides an online cooling device for local EH oil system equipment, which has the following beneficial effects:

[0015] 1. In the online cooling device of the local EH oil system equipment, when the EH oil temperature is lower than the required range, the three-way valve electrically connected to the second temperature sensor works, and the normally closed end of the working three-way valve opens, so that the high-temperature EH oil can flow from the inner tube to the three-way valve. At this time, the low-temperature EH oil in the cooling box cooled by the spiral tube exchanges heat with the high-temperature EH oil flowing in the inner tube, thereby shortening the time and intensity of the heat exchange of the high-temperature EH oil, avoiding the EH oil supplied to the equipment cooling system from being lower than the required temperature, ensuring the stability of the cooling device composed of the circulating heat absorption component, two partition plates, two blocking plates, the inner tube and the forward and reverse motors, and avoiding damage to the equipment cooling system.

[0016] 2. The online cooling device of the local EH oil system equipment, the partition plate and the blocking plate form a stepped channel inside the cooling box, so that the high-temperature EH oil flows along the stepped trajectory, and the multiple spiral tubes all penetrate the two partition plates and the two blocking plates. The high-temperature EH oil contacts the spiral tubes for heat exchange and is cooled. The stepped trajectory flow of the high-temperature EH oil is controlled by the partition plate and the blocking plate, which can increase the time that the high-temperature EH oil contacts the spiral tube for heat exchange, and the multiple spiral tubes are evenly distributed at various positions inside the cooling box to ensure uniform cooling of the high-temperature EH oil.

[0017] 3. The local EH oil system equipment online cooling device has two adjacent water inlet grooves separated by a blocking plate or a partition plate. Therefore, by controlling the sealing frames at different positions to align with the water inlet grooves, high-temperature EH oil with different contact times with multiple spiral tubes can enter the inner tube, control the temperature of the EH oil output by the three-way valve, and ensure that the EH oil is at the optimal working temperature.

[0018] 4. In the online cooling device for the local EH oil system equipment, when the temperature of the EH oil flowing inside the inner tube and contacting the first temperature sensor is still lower than the required working temperature range, the emergency component electrically connected to the first temperature sensor is arranged inside the insulation tube, and the electric heating wire heats the EH oil entering the three-way valve through the insulation tube, so that the temperature of the EH oil enters the working temperature range, ensuring that the EH oil supplied to the equipment cooling system meets the working requirements. After the equipment cooling system does not work for a long time, the three-way valve can be controlled to extract EH oil from the inner tube. If the temperature of the EH oil that has not been used for a long time is lower than the temperature range that the EH oil meets the working requirements, it can be automatically heated.

[0019] 5. The local EH oil system equipment online cooling device, the filter screen filters the large particles of impurities in the EH oil. Since the filter screen is in an inclined state with the top facing the direction of the EH oil flow, and a storage groove is provided on one side of the blocking plate, the impurities filtered out by the filter screen fall into the storage groove. Finally, the collection box is arranged inside the storage groove, and the collection box is arranged on the bottom side of the filter screen to collect and store the impurities. The collection box is also in an inclined state with the top facing the direction of the EH oil flow, so the impurities at the bottom of the collection box cavity will not be flushed out when the EH oil flows. Therefore, the filter alarm component can have a good filtering effect on the EH oil, and reduce the problem of the EH oil affecting the working effect due to hot and cold changes, equipment aging and other reasons.

[0020] 6. The local EH oil system equipment online cooling device, the hydraulic pressure on one side of the pressure relief valve increases, the water inlet and outlet of the pressure relief valve are fixedly connected to water pipes, the EH oil hydraulic pressure increases and enters the pressure relief valve from the water pipe and flushes the pressure relief valve, so that the EH oil can be normally circulated and cooled. At the same time, the pressure sensor is fixedly connected to the inside of one of the water pipes. The hydraulic pressure of the EH oil detected by the pressure sensor reaches the preset value of the pressure sensor. The alarm electrically connected to the pressure sensor is fixedly connected to the bottom of one side of the three-way valve. At this time, the alarm works outside the cooling box and sounds an alarm, reminding the staff to replace the EH oil that has deteriorated due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a bottom view structural schematic diagram of the cooling box of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the partition plate of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the blocking plate of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the transmission rod of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the short tube of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the thermal insulation pipe of the present invention;

[0028] Figure 8 It is a structural schematic diagram of the fixing bolt of the present invention;

[0029] Fig. 9 It is a schematic structural diagram of the collection box of the present invention.

[0030] Explanation of the reference numerals: 1. cooling box; 2. heat exchanger; 3. guide bend; 4. diversion box; 5. spiral tube; 6. partition plate; 7. bottom groove; 8. blocking plate; 9. top groove; 10. storage groove; 11. collecting box; 12. mounting shaft; 13. fixing bolt; 14. threaded hole; 15. filter screen; 16. square hole; 17. pressure relief valve; 18. water pipe; 19. pressure sensor; 20. inner tube; 21. forward and reverse motor; 22. water inlet groove; 23. transmission rod; 24. sealing frame; 25. first temperature sensor; 26. one-way valve; 27. insulation pipe; 28. three-way valve; 29. ​​discharge pipe; 30. second temperature sensor; 31. probe; 32. short pipe; 33. cross plate; 34. electric heating wire; 35. discharge pipe; 36. alarm. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axis", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "join", "hinge", etc. should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] An embodiment of the present invention provides an online cooling device for local EH oil system equipment.

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , including a cooling box 1 and a discharge pipe 35, wherein a circulating heat absorption component, two partition plates 6, two blocking plates 8, an inner tube 20 and a forward and reverse motor 21 are arranged inside the cooling box 1, and a filtering alarm component is arranged outside the blocking plate 8, and the filtering alarm component includes a filter screen 15, a collecting box 11 and two pressure relief valves 17, and a pressure sensor 19 is arranged on one side of a pressure relief valve 17 close to the discharge pipe 35, and the pressure sensor 19 is electrically connected to an alarm 36; a transmission rod 23 is arranged inside the inner tube 20, and a plurality of sealing frames 24 are fixedly sleeved on the outer side of the transmission rod 23, and a water inlet groove 22 is arranged on the outer side of the plurality of sealing frames 24, and a first temperature sensor 25 is fixedly connected to one side of a sealing frame 24 close to the forward and reverse motor 21, and the first temperature sensor 25 is electrically connected to an emergency component, a three-way valve 28 is fixedly connected to one side of the cooling box 1, and a second temperature sensor 30 is fixedly connected to one side of the three-way valve 28, and the emergency component is arranged between the normally closed end of the three-way valve 28 and the inner tube 20.

[0038] Specifically, the circulating heat absorption component includes a heat exchanger 2, which cools hot water into cold water and then discharges it. The water inlet and outlet ends of the heat exchanger 2 are fixedly connected with a guide elbow 3, and the cold water is discharged from the guide elbow 3 installed at the water outlet end of the heat exchanger 2. One end of the guide elbow 3 is fixedly connected with a diverter box 4, and the cold water enters the diverter box 4. A plurality of spiral tubes 5 are fixedly connected between the two diverter boxes 4. The cold water entering the diverter box 4 is diverted to the plurality of spiral tubes 5. The cold water flowing in the plurality of spiral tubes 5 exchanges heat with the high-temperature EH oil in the cooling box 1. After the cold water becomes hot water, it returns to another diverter box 4. This diverter box 4 is also connected to the water inlet end of the heat exchanger 2 through a guide elbow 3, and the hot water returns to the heat exchanger 2. This reciprocating process causes the cold water to flow in the plurality of spiral tubes 5 to cool the high-temperature EH oil passing through the cooling box 1.

[0039] The high-temperature EH oil discharged after the equipment is used is injected into the cooling box 1 through the discharge pipe 35, and the discharge pipe 35 is fixedly connected to one side of the top of the cooling box 1. The high-temperature EH oil falls to one side of the cooling box 1. The two partition plates 6 and the two blocking plates 8 are fixedly connected to the cooling box 1 and are staggered. Figure 3 As shown, the bottom of the two partition plates 6 is provided with a bottom groove 7, and the top of the two blocking plates 8 is provided with a top groove 9. Since the top groove 9 and the bottom groove 7 are arranged one above the other, the partition plates 6 and the blocking plates 8 form a stepped channel inside the cooling box 1, so that the high-temperature EH oil flows along the stepped trajectory. The multiple spiral tubes 5 pass through the two partition plates 6 and the two blocking plates 8. The high-temperature EH oil contacts the spiral tubes 5 for heat exchange and is cooled. The stepped trajectory flow of the high-temperature EH oil is controlled by the partition plates 6 and the blocking plates 8, which can increase the time that the high-temperature EH oil contacts the spiral tubes 5 for heat exchange, and the multiple spiral tubes 5 are evenly distributed at various positions inside the cooling box 1 to ensure uniform cooling of the high-temperature EH oil.

[0040] Because a short pipe 32 is fixedly connected between the normally open end of the three-way valve 28 and the cooling box 1, the high-temperature EH oil after cooling inside the cooling box 1 enters the three-way valve 28 through the short pipe 32. A discharge pipe 29 is fixedly connected to one side of the three-way valve 28. The discharge pipe 29 is connected to the oil inlet of the equipment cooling system. The equipment cooling system extracts the EH oil after cooling inside the cooling box 1 through the discharge pipe 29, the three-way valve 28 and the short pipe 32.

[0041] The second temperature sensor 30 includes a probe 31. Since the bottom end of the probe 31 extends to the inside of the discharge pipe 29, the second temperature sensor 30 monitors the temperature of the EH oil discharged through the discharge pipe 29 in real time through the probe 31. When the temperature of the EH oil is lower than the required range, the three-way valve 28 electrically connected to the second temperature sensor 30 works, the normally closed end of the working three-way valve 28 is opened, and the normally open end is closed, and the water inlet groove 22 is opened at the top of the outer side of the inner pipe 20, so the high-temperature EH oil entering the cooling box 1 at this time enters the inner pipe 20 through the water inlet groove 22. Since the multiple sealing frames 24 inside the inner pipe 20 have gaps, the high-temperature EH oil can flow from the inner pipe 20 to the three-way valve 28. The normally closed end of the three-way valve 28 is fixedly connected to the insulation pipe 27, and the one-way valve 26 is fixedly connected between the insulation pipe 27 and the inner pipe 20. The EH oil flowing inside the inner pipe 20 is discharged through the one-way valve 26, the insulation pipe 27 and the three-way valve 28, and the EH oil supplied to the oil inlet of the equipment cooling system. At this time, the low-temperature EH oil in the cooling box 1, which has been cooled by the spiral tube 5, exchanges heat with the high-temperature EH oil flowing in the inner tube 20, shortening the time and intensity of the heat exchange of the high-temperature EH oil, avoiding the EH oil supplied to the equipment cooling system from being lower than the required temperature, ensuring the stability of the cooling device composed of the circulating heat absorption component, two partition plates 6, two blocking plates 8, the inner tube 20 and the forward and reverse motors 21, and avoiding damage to the equipment cooling system.

[0042] According to the rule of distance from the discharge pipe 35 from near to far, the four sealing racks 24 are set as No. 1 sealing rack 24, No. 2 sealing rack 24, No. 3 sealing rack 24 and No. 4 sealing rack 24. When the transmission rod 23 is not rotating, the sealing rack No. 1 is the farthest from the forward and reverse motor 21, that is, the bottom of the discharge pipe 35. When the transmission rod 23 is not rotating, the sealing rack No. 1 24 is aligned with the water inlet groove 22 opened on the outside of the inner tube 20, and the EH oil water inlet groove 22 at the bottom of the discharge pipe 35 enters the inner tube 20 and flows inside the inner tube 20.

[0043] The forward and reverse motor 21 is fixedly connected to the inside of the cooling box 1, and the transmission rod 23 is fixedly connected to the output end of the forward and reverse motor 21. When the forward and reverse motor 21 drives the transmission rod 23 to rotate 90 degrees, the gap of the second sealing frame 24 is aligned with the outer water inlet groove 22; after the forward and reverse motor 21 is controlled to drive the transmission rod 23 to rotate 180 degrees, the gap of the third sealing frame 24 is aligned with the outer water inlet groove 22; after the forward and reverse motor 21 is controlled to drive the transmission rod 23 to rotate 270 degrees, the gap of the fourth sealing frame 24 is aligned with the outer water inlet groove 22. After the forward and reverse motor 21 is controlled to drive the transmission rod 23 to rotate 360 ​​degrees or reverse reset, the transmission rod 23 and the four sealing frames 24 return to the initial state.

[0044] The inner tube 20 passes through two partition plates 6 and two blocking plates 8, so two adjacent water inlet grooves 22 are separated by the blocking plate 8 or the partition plate 6. Therefore, by controlling the sealing frames 24 at different positions to align with the water inlet grooves 22, high-temperature EH oil with different contact times with the multiple spiral tubes 5 can enter the inner tube 20, control the temperature of the EH oil output by the three-way valve 28, and ensure that the EH oil is at the optimal working temperature.

[0045] A first temperature sensor 25 is fixedly connected to one side of a sealing frame 24 near the forward and reverse motor 21. When the temperature of the EH oil flowing inside the inner tube 20 and contacting the first temperature sensor 25 is still lower than the required working temperature range, the first aid component electrically connected to the first temperature sensor 25 is arranged inside the insulation tube 27. A cross plate 33 is fixedly connected between the electric heating wire 34 and the insulation tube 27. The electric heating wire 34 installed by the cross plate 33 works. The working electric heating wire 34 heats the EH oil entering the three-way valve 28 through the insulation tube 27, so that the temperature of the EH oil enters the working temperature range, ensuring that the EH oil supplied to the equipment cooling system meets the working requirements. After the equipment cooling system has not been working for a long time, the three-way valve 28 can be controlled to extract the EH oil from the inner tube 20. If the temperature of the EH oil that has not been used for a long time is lower than the temperature range that the EH oil meets the working requirements, it can be automatically heated.

[0046] A one-way valve 26 is fixedly connected between the insulation pipe 27 and the inner pipe 20 , and the one-way valve 26 prevents the EH oil from flowing back, thereby ensuring the stability of the EH oil supply channel.

[0047] Specifically, when the EH oil passes through the blocking plate 8, because the filter screen 15 is tilted inside the top groove 9 and fixedly connected to the blocking plate 8, the filter screen 15 filters the large particles of impurities in the EH oil. Since the filter screen 15 is in a tilted state with the top facing the direction of the EH oil flow, and a storage groove 10 is provided on one side of the blocking plate 8, under the influence of gravity, the impurities filtered out by the filter screen 15 fall into the storage groove 10, and finally the collection box 11 is arranged inside the storage groove 10, and the collection box 11 is arranged on the bottom side of the filter screen 15 to collect and store the impurities. The collection box 11 is also tilted with the top facing the direction of the EH oil flow, so the EH oil flow will not flush out the impurities at the bottom of the inner cavity of the collection box 11, so the filter alarm component can have a good filtering effect on the EH oil, and reduce the problem of the EH oil affecting the working effect due to hot and cold changes, equipment aging and the like.

[0048] One end of the collecting box 11 is fixedly connected to a mounting shaft 12, and a fixing bolt 13 is rotatably sleeved on the outer side of the mounting shaft 12, so the rotation of the fixing bolt 13 will not be restricted by the mounting shaft 12, and the fixing bolt 13 can be freely rotated and disassembled. A threaded hole 14 is provided on one side of the cooling box 1, and the fixing bolt 13 passes through the threaded hole 14 and is threadedly connected to the cooling box 1. After the fixing bolt 13 is rotated out of the threaded hole 14, the collecting box 11 is pulled by the fixing bolt 13 and the mounting shaft 12, so that the collecting box 11 passes through the threaded hole 14 and leaves the cooling box 1, and the impurities collected in the collecting box 11 can be processed.

[0049] Specifically, a square hole 16 is provided on one side of the blocking plate 8, and a pressure relief valve 17 is arranged inside the square hole 16 and fixedly connected to the blocking plate 8. The square hole 16 does not work before the hydraulic pressure of the EH oil on one side does not reach a certain value. When the EH oil is too turbid, causing the filter 15 to be blocked, the hydraulic pressure on one side of the pressure relief valve 17 increases, and the water inlet and outlet of the pressure relief valve 17 are fixedly connected to a water pipe 18. When the hydraulic pressure of the EH oil increases, it enters the pressure relief valve 17 from the water pipe 18 and opens the pressure relief valve 17, so that the EH oil can be normally circulated and cooled. At the same time, the pressure sensor 19 is fixedly connected to the inside of one of the water pipes 18. The hydraulic pressure of the EH oil detected by the pressure sensor 19 reaches the preset value of the pressure sensor 19. The alarm 36 electrically connected to the pressure sensor 19 is fixedly connected to the bottom of one side of the three-way valve 28. At this time, the alarm 36 works outside the cooling box 1 and sounds an alarm to remind the staff to replace the EH oil that has deteriorated due to long-term use. Therefore, the filter alarm component can not only filter the EH oil and slow down its aging speed, but also can sound an alarm when the EH oil deteriorates to a certain length, thereby increasing the practicality of the cooling device.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "one specific embodiment" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and the inventive concept of the present invention within the scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A local EH oil system equipment online cooling device, characterized in that: It comprises a cooling box and a discharge pipe; a circulating heat absorption component, two partition plates, two blocking plates, an inner tube and a forward and reverse motor are arranged inside the cooling box; a filtering alarm component is arranged on the outer side of the blocking plate; the filtering alarm component comprises a filter screen, a collecting box and two pressure relief valves; a pressure sensor is arranged on one side of a pressure relief valve close to the discharge pipe, and the pressure sensor is electrically connected to an alarm; a transmission rod is arranged inside the inner tube, a plurality of sealing frames are fixedly sleeved on the outer side of the transmission rod, a water inlet groove is arranged on the outer side of the plurality of sealing frames, a first temperature sensor is fixedly connected to one side of the sealing frame close to the forward and reverse motor, and the first temperature sensor is electrically connected to an emergency component; a three-way valve is fixedly connected to one side of the cooling box, a second temperature sensor is fixedly connected to one side of the three-way valve, and the emergency component is arranged between the normally closed end of the three-way valve and the inner tube; The discharge pipe is fixedly connected to one side of the top of the cooling box, the circulating heat absorption component includes a heat exchanger, the water inlet and outlet ends of the heat exchanger are fixedly connected with a guide elbow, one end of the guide elbow is fixedly connected with a diversion box, and a plurality of spiral tubes are fixedly connected between the two diversion boxes, and the plurality of spiral tubes all penetrate two partition plates and two blocking plates; The bottom of the two partition plates are provided with a bottom groove, the top of the two blocking plates are provided with a top groove, the two partition plates and the two blocking plates are fixedly connected to the inside of the cooling box, a short pipe is fixedly connected between the normally open end of the three-way valve and the cooling box, one side of the three-way valve is fixedly connected to a discharge pipe, and the second temperature sensor includes a probe, and the bottom end of the probe extends to the inside of the discharge pipe; The inner tube passes through two partition plates and two blocking plates, the forward and reverse motors are fixedly connected to the inside of the cooling box, the transmission rods are fixedly connected to the output ends of the forward and reverse motors, and the water inlet trough is opened on the top of the outer side of the inner tube; The normally closed end of the three-way valve is fixedly connected to a heat preservation pipe, and a one-way valve is fixedly connected between the heat preservation pipe and the inner pipe; The first aid component is arranged inside the insulation pipe, and the first aid component includes an electric heating wire, and a cross plate is fixedly connected between the electric heating wire and the insulation pipe.

2. The local EH oil system equipment online cooling device according to claim 1 is characterized in that: A square hole is provided on one side of the blocking plate, the pressure relief valve is arranged inside the square hole and fixedly connected to the blocking plate, the water inlet and outlet ends of the pressure relief valve are fixedly connected to water pipes, the pressure sensor is fixedly connected inside one of the water pipes, and the alarm is fixedly connected to the bottom of one side of the three-way valve.

3. The local EH oil system equipment online cooling device according to claim 1 is characterized in that: The filter screen is tiltedly arranged inside the top groove and fixedly connected to the blocking plate. A storage groove is opened on one side of the blocking plate. The collection box is arranged inside the storage groove. The collection box is arranged on one side of the bottom of the filter screen.

4. The local EH oil system equipment online cooling device according to claim 1, characterized in that: One end of the collecting box is fixedly connected with a mounting shaft, a fixing bolt is rotatably sleeved on the outer side of the mounting shaft, a threaded hole is opened on one side of the cooling box, and the fixing bolt passes through the threaded hole and is threadedly connected with the cooling box.

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