阅读说明：本技术 一种变压阀真空干燥设备 (Vacuum drying equipment for variable pressure valve ) 是由 袁润强 于 2020-06-17 设计创作，主要内容包括：本发明涉及真空干燥设备技术领域,且公开了一种变压阀真空干燥设备,包括支撑板,所述支撑板,所述支撑板的上表面设置有罐门行走机构,所述支撑板的上表面固定连接有真空机组,所述真空机组的外表面的工作端连接有第一连接管,所述第一连接管的外表面设置有手动对夹蝶阀,所述第一连接管的外表面固定连接有真空表,所述第一连接管的外表面固定连接有压力传感器,所述第一连接管的外表面通过法兰接盘连接有吸潮器。该变压法真空干燥设备,具备考虑了在干燥过程中的出水原理及加热过程,内部与表面温度均匀,出水过程更加合理。从而使干燥时间大幅度缩短,是220KV级以下电压等级油、纸组合绝缘变压器干燥处理的理想工艺及设备。(The invention relates to the technical field of vacuum drying equipment and discloses variable pressure valve vacuum drying equipment which comprises a supporting plate and a first connecting pipe, wherein a tank door walking mechanism is arranged on the upper surface of the supporting plate, a vacuum unit is fixedly connected to the upper surface of the supporting plate, the working end of the outer surface of the vacuum unit is connected with the first connecting pipe, a manual butt-clamping butterfly valve is arranged on the outer surface of the first connecting pipe, a vacuum meter is fixedly connected to the outer surface of the first connecting pipe, a pressure sensor is fixedly connected to the outer surface of the first connecting pipe, and a moisture absorber is connected to the outer surface of the first connecting pipe through a flange connecting disc. The variable pressure vacuum drying equipment has the advantages that the water outlet principle and the heating process in the drying process are considered, the internal temperature and the surface temperature are uniform, and the water outlet process is more reasonable. Therefore, the drying time is greatly shortened, and the method is an ideal process and equipment for drying the oil and paper combined insulating transformer with the voltage level below 220 KV.)

1. A variable pressure valve vacuum drying apparatus includes a support plate (5), characterized in that: the automatic drying device is characterized by comprising a supporting plate (5), wherein a tank door walking mechanism (1) is arranged on the upper surface of the supporting plate (5), a vacuum unit (2) is fixedly connected to the upper surface of the supporting plate (5), a first connecting pipe (6) is connected to the working end of the outer surface of the vacuum unit (2), a manual opposite clamping butterfly valve (3) is arranged on the outer surface of the first connecting pipe (6), a vacuum meter (4) is fixedly connected to the outer surface of the first connecting pipe (6), a pressure sensor (7) is fixedly connected to the outer surface of the first connecting pipe (6), a moisture absorber (8) is connected to the outer surface of the first connecting pipe (6) through a flange connecting disc, a drying tank (9) is arranged on the upper surface of the supporting plate (5), a filter (10) is fixedly connected to the left side surface of the drying tank (9), and an oil expansion tank support (11) is, the outer fixed surface of the oil expansion tank support (11) is connected with an oil expansion tank (12), the outer fixed surface of the drying tank (9) is connected with a straight cage ladder (13), the upper fixed surface of the support plate (5) is connected with a magnetic pump frame (14), the upper fixed surface of the magnetic pump frame (14) is connected with a platinum resistor seat (15), the upper fixed surface of the platinum resistor seat (15) is connected with a platinum thermal resistor (16), the upper fixed surface of the magnetic pump frame (14) is connected with a high-temperature-resistant magnetic pump (17), the outer surface of the high-temperature-resistant magnetic pump (17) is connected with a corrugated pipe (35) through a flange, the outer surface of the corrugated pipe (35) is provided with a first corrugated pipe stop valve (19), the corrugated pipe (35) is far away from one end of the high-temperature-resistant magnetic pump (17) is fixedly connected with an electric heater (20), the working end of the high-temperature-, a second connecting pipe (18) is connected between the high-temperature-resistant magnetic pump (17) and the oil expansion tank (12), the second connecting pipe (18) is communicated with a plurality of positions of the drying tank (9), a second corrugated pipe stop valve (22) is fixedly connected to the outer surface of the second connecting pipe (18), a diaphragm valve (23) is fixedly connected to the left side surface of the drying tank (9), a rotary vane pump frame (24) is fixedly connected to the upper surface of the supporting plate (5), a rotary vane pump (25) is fixedly connected to the upper surface of the rotary vane pump frame (24), a third connecting pipe (26) is fixedly connected to the working end of the rotary vane pump (25), a horizontal condenser (27) is fixedly connected to the upper surface of the supporting plate (5), the horizontal condenser (27) is connected with the rotary vane pump (25) through the third connecting pipe (26), a fourth connecting pipe (34) is connected between the horizontal condenser (27) and the vacuum unit (2), the utility model discloses a vacuum drying device, including backup pad (5), last fixed surface of backup pad (5) is connected with cooling water set (33), cooling water set (33) with be connected with fifth connecting pipe (28) between vacuum unit (2), the first electric contact pressure gauge (29) of surface fixed connection of cooling water set (33), the last fixed surface of backup pad (5) is connected with second electric contact pressure gauge (36), the last fixed surface of backup pad (5) is connected with hydraulic pressure station (30), the last fixed surface of backup pad (5) is connected with automatically controlled cabinet (31), the surface of drying cylinder (9) is connected with electric platform truck (32).

2. A variable pressure valve vacuum drying apparatus according to claim 1, wherein: the upper surface of the supporting plate (5) is provided with a groove, the lower surface of the drying tank (9) is connected with four wheels, the four wheels are uniformly distributed on the lower surface of the drying tank (9), and the wheels are located inside the groove.

3. A variable pressure valve vacuum drying apparatus according to claim 1, wherein: and the moisture absorber (8) is provided with a vacuum gauge through a hoop.

4. A variable pressure valve vacuum drying apparatus according to claim 1, wherein: the outer surface of the filter (10) is connected with an electro-pneumatic flapper valve through a filter joint.

5. A variable pressure valve vacuum drying apparatus according to claim 1, wherein: and the outer surface of the second electric contact pressure gauge (36) is connected with a pneumatic triple piece and a compressed air joint.

6. A variable pressure valve vacuum drying apparatus according to claim 1, wherein: the third connecting pipe (26) is provided with a baffle valve group.

7. A variable pressure valve vacuum drying apparatus according to claim 1, wherein: the horizontal condenser (27) is connected with the third connecting pipe (26) through a reducing flange.

Technical Field

The invention relates to the technical field of vacuum drying equipment, in particular to variable pressure valve vacuum drying equipment.

Background

Vacuum drying, also known as resolution drying, is a drying method in which a material is placed under negative pressure and is properly heated to reach a boiling point under a negative pressure state or is solidified by cooling so as to dry the material through a melting point. .

When the existing vacuum drying equipment is used, the stroke of an 'oven dry layer' on the surface of a sterilization material cannot be avoided, the internal and surface temperatures are not uniform, and the water outlet process is unreasonable, so that the drying time is too long, and the drying efficiency is low.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a variable pressure valve vacuum drying device, which considers the water outlet principle and the heating process in the drying process, avoids the formation of an insulating layer on the surface of an insulating material, has uniform internal and surface temperature and more reasonable water outlet process. Therefore, the drying time is greatly shortened, the method has the advantages of ideal process and equipment for drying treatment of the oil and paper combined insulating transformer with the voltage level below 220KV and the like, and solves the problems that the 'drying layer' on the surface of the sterilization material cannot be avoided, the temperature inside and the surface of the sterilization material is not uniform, the water outlet process is unreasonable, the drying time is too long, and the drying efficiency is low.

(II) technical scheme

The invention provides the following technical scheme: a variable pressure valve vacuum drying device comprises a supporting plate, wherein a tank door walking mechanism is arranged on the upper surface of the supporting plate, a vacuum unit is fixedly connected to the upper surface of the supporting plate, a first connecting pipe is connected to the working end of the outer surface of the vacuum unit, a manual opposite clamping butterfly valve is arranged on the outer surface of the first connecting pipe, a vacuum meter is fixedly connected to the outer surface of the first connecting pipe, a pressure sensor is fixedly connected to the outer surface of the first connecting pipe, a moisture absorber is connected to the outer surface of the first connecting pipe through a flange connecting disc, a drying tank is arranged on the upper surface of the supporting plate, a filter is fixedly connected to the left side surface of the drying tank, an oil expansion tank support is fixedly connected to the outer surface of the drying tank, an oil expansion tank is fixedly connected to the outer surface of the oil expansion tank support, a straight cage ladder is fixedly connected, the upper surface of the supporting plate is fixedly connected with a magnetic pump frame, the upper surface of the magnetic pump frame is fixedly connected with a platinum resistor seat, the upper surface of the platinum resistor seat is fixedly connected with a platinum thermal resistor, the upper surface of the magnetic pump frame is fixedly connected with a high-temperature resistant magnetic pump, the outer surface of the high-temperature resistant magnetic pump is connected with a corrugated pipe through a flange, the outer surface of the corrugated pipe is provided with a first corrugated pipe stop valve, one end of the corrugated pipe, which is far away from the high-temperature resistant magnetic pump, is fixedly connected with an electric heater, the working end of the high-temperature resistant magnetic pump is connected with an oil filter, a second connecting pipe is connected between the high-temperature resistant magnetic pump and the oil expansion tank, the second connecting pipe is communicated with the drying tank at multiple positions, the outer surface of the second connecting pipe is fixedly connected with a, the upper surface of the supporting plate is fixedly connected with a rotary vane pump frame, the upper surface of the rotary vane pump frame is fixedly connected with a rotary vane pump, the working end of the rotary vane pump is fixedly connected with a third connecting pipe, the upper surface of the supporting plate is fixedly connected with a horizontal condenser, the horizontal condenser is connected with the rotary vane pump through a third connecting pipe, a fourth connecting pipe is connected between the horizontal condenser and the vacuum unit, the upper surface of the supporting plate is fixedly connected with a water chilling unit, a fifth connecting pipe is connected between the water chilling unit and the vacuum unit, the outer surface of the water chilling unit is fixedly connected with a first electric contact pressure gauge, the upper surface of the supporting plate is fixedly connected with a second electric contact pressure gauge, the upper surface of backup pad fixedly connected with hydraulic pressure station, the upper surface of backup pad fixedly connected with automatically controlled cabinet, the surface of drying can is connected with electronic platform truck.

Preferably, the upper surface of the supporting plate is provided with a groove, the lower surface of the drying tank is connected with four wheels, the four wheels are uniformly distributed on the lower surface of the drying tank, and the wheels are located inside the groove.

Preferably, the moisture absorber is provided with a vacuum gauge through a clamp.

Preferably, the outer surface of the filter is connected to an electro-pneumatic flapper valve by a filter connector.

Preferably, the outer surface of the second electro-contact pressure gauge is connected with a pneumatic triple piece and a compressed air connector.

Preferably, the third connecting pipe is provided with a baffle valve group.

Preferably, the horizontal condenser is connected with the third connecting pipe through a reducing flange.

(III) advantageous effects

Compared with the prior art, the invention provides a variable pressure valve vacuum drying device which has the following beneficial effects:

the variable pressure vacuum drying equipment has the advantages that the water outlet principle and the heating process in the drying process are considered, the formation of an insulating layer on the surface of an insulating material is avoided, the internal temperature and the surface temperature are uniform, and the water outlet process is more reasonable. Therefore, the drying time is greatly shortened, and the method is an ideal process and equipment for drying the oil and paper combined insulating transformer with the voltage level below 220 KV.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the present invention;

fig. 3 is a schematic side view of the structure of fig. 2 from the direction a.

In the figure: 1 tank door running gear, 2 vacuum units, 3 manual butt-clamping butterfly valves, 4 vacuum meters, 5 supporting plates, 6 first connecting pipes, 7 pressure sensors, 8 moisture absorbers, 9 drying tanks, 10 filters, 11 oil expansion tank supports, 12 oil expansion tanks, 13 straight cage ladders, 14 magnetic pump frames, 15 platinum resistor seats, 16 platinum thermal resistors, 17 high-temperature-resistant magnetic pumps, 18 second connecting pipes, 19 first bellows stop valves, 20 electric heaters, 21 oil filters, 22 second bellows stop valves, 23 diaphragm valves, 24 rotary vane pump frames, 25 rotary vane pumps, 26 third connecting pipes, 27 horizontal condensers, 28 fifth connecting pipes, 29 first electric contact pressure meters, 30 hydraulic stations, 31 electric control cabinets, 32 electric trolleys, 33 water chilling units, 34 fourth connecting pipes and 35 bellows.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a variable pressure valve vacuum drying apparatus includes a support plate 5, a tank door traveling mechanism 1 provided on an upper surface of the support plate 5, a vacuum unit 2 fixedly connected to an upper surface of the support plate 5, a first connection pipe 6 connected to a working end of an outer surface of the vacuum unit 2, a manual butt-clamping butterfly valve 3 provided on an outer surface of the first connection pipe 6, a vacuum gauge 4 fixedly connected to an outer surface of the first connection pipe 6, a pressure sensor 7 fixedly connected to an outer surface of the first connection pipe 6, a moisture absorber 8 connected to an outer surface of the first connection pipe 6 via a flange, a vacuum gauge installed on the moisture absorber 8 via a clamp, a drying tank 9 provided on an upper surface of the support plate 5, a groove provided on an upper surface of the support plate 5, four wheels connected to a lower surface of the drying tank 9, the four wheels uniformly distributed, the wheels are positioned in the grooves and are designed and manufactured according to the vacuum container specification, the drying tank 9 is of a horizontal structure, the tank door is horizontally pulled open on the left side, the speed reducer is driven, the limit switch is used for braking, and after the tank door is closed in place, the four groups of hydraulic cylinders are locked; the '0' type sealing ring is adopted for sealing, the requirement of vacuumizing during drying is met, three temperature measuring connectors are arranged on the tank, and the temperature of the body, the iron core and the space in the tank can be measured respectively. The tank door is provided with accessories such as a lighting observation window and the like, so that the rock wool can be conveniently observed in the tank, the rock wool is insulated outside the tank, the color steel plate is armored, the tank top is armored by the checkered plate,

the left side surface of the drying tank 9 is fixedly connected with a filter 10, the outer surface of the filter 10 is connected with an electro-pneumatic baffle valve through a filter joint, the outer surface of the drying tank 9 is fixedly connected with an oil expansion tank support 11, the outer surface of the oil expansion tank support 11 is fixedly connected with an oil expansion tank 12, the outer surface of the drying tank 9 is fixedly connected with a straight cage ladder 13, the upper surface of the support plate 5 is fixedly connected with a magnetic pump frame 14, the upper surface of the magnetic pump frame 14 is fixedly connected with a platinum resistor seat 15, the upper surface of the platinum resistor seat 15 is fixedly connected with a platinum thermal resistor 16, the upper surface of the magnetic pump frame 14 is fixedly connected with a high-temperature resistant magnetic pump 17, the outer surface of the high-temperature resistant magnetic pump 17 is connected with a corrugated pipe 35 through a flange, the outer surface of the corrugated pipe 35 is provided with a first, the working end of the high-temperature resistant magnetic pump 17 is connected with an oil filter 21, a second connecting pipe 18 is connected between the high-temperature resistant magnetic pump 17 and the oil expansion tank 12, the second connecting pipe 18 is communicated with multiple parts of the drying tank 9, the second connecting pipe 18 is divided into four groups, the four groups are used for heating, the heating medium is heat conduction oil, each group of calandria adopts a shell-and-tube parallel structure, the heating area meets the process requirement of variable pressure drying, when the high-temperature magnetic pump is used, the high-temperature heat conduction oil is used as a heat carrier, the heat conduction oil is heated through an electric heater 20, the high-temperature magnetic pump 17 forces the heat conduction oil to circulate through the heat dissipation calandria heat dissipation pipe 18 in the tank, the temperature in the tank is increased, the indirect heating

A second bellows stop valve 22 is fixedly connected to the outer surface of the second connecting pipe 18, a diaphragm valve 23 is fixedly connected to the left side surface of the drying tank 9, a rotary vane pump frame 24 is fixedly connected to the upper surface of the support plate 5, a rotary vane pump 25 is fixedly connected to the upper surface of the rotary vane pump frame 24, a third connecting pipe 26 is fixedly connected to the working end of the rotary vane pump 25, a horizontal condenser 27 is fixedly connected to the upper surface of the support plate 5, the horizontal condenser 27 is connected to the third connecting pipe 26 through a reducing flange, a baffle valve set is arranged on the third connecting pipe 26, the horizontal condenser is cooled by a stainless steel pipe and automatically drains water, water vapor in the pumped gas can be condensed and separated out without breaking vacuum, and the pumped high-temperature gas is cooled simultaneously,

the horizontal condenser 27 is connected with the rotary vane pump 25 through the third connecting pipe 26, a fourth connecting pipe 34 is connected between the horizontal condenser 27 and the vacuum unit 2, the upper surface of the supporting plate 5 is fixedly connected with a water chilling unit 33, a fifth connecting pipe 28 is connected between the water chilling unit 33 and the vacuum unit 2, the outer surface of the water chilling unit 33 is fixedly connected with a first electric contact pressure gauge 29, cooling water cools the vacuum unit 2 and the water chilling unit 33 simultaneously, chilled water cools the vacuum unit 2, the vacuum unit 2 can rapidly and effectively condense out moisture in gas pumped out from the drying tank 9, and the moisture is automatically discharged out under the condition that the vacuum state is not broken. When the pressure of the cooling water is insufficient, the first electro-contact pressure gauge 29 on the cooling system pipeline can send out an alarm signal

The upper surface of the supporting plate 5 is fixedly connected with a second electric contact pressure gauge 36, the outer surface of the second electric contact pressure gauge 36 is connected with a pneumatic triple piece and a compressed air connector, the air source triple piece can be used for processing compressed air and adjusting working pressure required by a pneumatic element, and when the air pressure is insufficient, the second electric contact pressure gauge 36 can send out an alarm signal. In order to avoid faults, clean and dry compressed air must be used, when the high-temperature resistant magnetic pump 17 abnormally works, an electric contact pressure gauge arranged on a pipeline of an outlet of the pump can send out an alarm signal, the upper surface of the supporting plate 5 is fixedly connected with a hydraulic station 30, the upper surface of the supporting plate 5 is fixedly connected with an electric control cabinet 31, the electric control cabinet 31 adopts a fully-closed frame structure, a ventilation fan is arranged in the electric control cabinet, the outer surface of the drying tank 9 is connected with an electric trolley 32, and the maximum load bearing capacity is 30 tons.

The working process of the variable pressure vacuum drying equipment comprises the following steps:

s1: the materials are put into the drying tank 9 through the electric trolley 32, and then are pumped out through the vacuum unit 2 until 80000 kilopascals is reached, and the operation is stopped for 1500 seconds;

s2: evacuating to 40000 papar by a vacuum unit 2, then immediately inflating to 80000 papar, stopping for 1500 seconds, and if the temperature is lower than 70 ℃, circulating the step;

s3: after the temperature reaches 70 ℃, entering the step, evacuating to 60000 kilopascals by a vacuum unit 2, stopping for 900 seconds, evacuating to 40000 kilopascals, stopping for 900 seconds, evacuating to 20000 kilopascals, stopping for 900 seconds, evacuating to 10000 kilopascals, and stopping for 900 seconds;

s4: evacuating for 12000 seconds, closing the vacuum unit 2, then judging whether the temperature of the material reaches 75 ℃, meanwhile, whether the vacuum degree reaches 500 Pa, and if one is reached, circulating the step;

s5: continuously vacuumizing until 50 Pa is reached;

s6: and continuously vacuumizing for 10800 seconds until the vacuum degree is lower than 25 Pa, and finishing the process.

In conclusion, the variable pressure vacuum drying equipment considers the water outlet principle and the heating process in the drying process, avoids the formation of an insulating layer on the surface of an insulating material, has uniform internal and surface temperatures, and is more reasonable in the water outlet process. Therefore, the drying time is greatly shortened, and the method is an ideal process and equipment for drying the oil and paper combined insulating transformer with the voltage level below 220 KV.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The standard parts used in the present application document can be purchased from the market, and can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts the conventional means matured in the prior art, the machines, the parts and the equipment adopt the conventional types in the prior art, the circuit connection adopts the conventional connection mode in the prior art, no specific description is provided here, meanwhile, the electric elements appearing in the specification are electrically connected with the external main controller and the mains supply, the peripheral controller mentioned in the specification can play a control role for the electric elements mentioned in the specification, and the peripheral controller is the conventional known equipment.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.