CN207064390U - Hydraulic power unit water cooling system - Google Patents

Abstract

The utility model discloses a water cooling system for a hydraulic pump station. The water outlet of the cooling tower is connected to the water inlet of the water tank through a pipeline, and the water outlet of the water tank is connected to two parallel branch pipelines; the two branch pipelines are respectively composed of a disc valve, a Y-type filter, water pump, check valve, and disc valve are connected in sequence; the water inlets of the two hydraulic oil heat exchange equipment are connected in parallel and then connected to the rear end of the two parallel branch pipes through the outlet pipe of the cooling unit; the pressure gauge is installed in the cooling On the water outlet pipe of the unit; the water outlets of the two hydraulic oil heat exchange equipment are connected in parallel and then connected to the return water port of the cooling tower through the return water pipe of the cooling unit; a butterfly valve is installed between the water outlet pipe of the cooling unit and the return water pipe of the cooling unit. The utility model minimizes the influence of temperature rise, and solves the heating problem in the hydraulic pump station with high performance, stability and economy.

Description

Hydraulic pump station water cooling system

technical field

The utility model belongs to the field of hydraulic pump stations and relates to a water cooling system specially used for hydraulic pump stations.

Background technique

The hydraulic pump station is a hydraulic source device composed of a hydraulic pump, a driving motor, an oil tank, a directional valve, a throttle valve, and a relief valve, or a hydraulic device including a control valve. Supply oil according to the flow direction, pressure and flow required by the driving device. It is suitable for all kinds of machinery where the driving device and the hydraulic station are separated. Connect the hydraulic station and the driving device with oil pipes, and the hydraulic system can realize various specified actions.

When the hydraulic pump station is working, except for the effective power output by the actuator to drive the external load, the remaining power is all lost in the form of heat. These include the pressure loss along the liquid flow, local pressure loss, mechanical loss and volume loss of each component, etc. The energy of these losses is converted into heat energy, which increases the temperature of the oil, which is an important problem that plagues the normal operation of the hydraulic pump station.

A series of adverse consequences brought about by excessive oil temperature include increased leakage of the hydraulic system, decreased volumetric efficiency, and changes in the performance of control components. For example, due to the decrease of oil viscosity caused by the rise of oil temperature, the damping of the poppet valve of the relief valve is reduced, the stability of the poppet valve is deteriorated, and self-excited oscillation noise is caused. The overflow valve produces high-frequency whistle, which makes the overflow valve not work normally. The temperature rise also accelerates the aging of the oil and the rubber sealing ring hose in the hydraulic system, which affects its service life. In addition, the temperature rise will cause thermal deformation of the mechanical structure, causing mechanical jamming and destroying the existing precision.

Utility model content

In view of the above problems, the utility model provides a hydraulic pump station water cooling system, which aims to solve the heat generation problem in the hydraulic pump station with high performance, stability and economy, and reduce the influence of the temperature rise of the hydraulic pump station system.

In order to achieve the above object, the embodiments of the present utility model adopt the following technical solutions:

A hydraulic pump station water cooling system, including a cooling tower, a water tank, two sets of hydraulic oil heat exchange equipment, multiple disc valves, two Y-shaped filters, two water pumps, three pressure gauges and two check valves;

The water outlet of the cooling tower is connected to the water inlet of the water tank through pipelines, and the water outlet of the water tank is connected to two parallel first branch pipelines and second branch pipelines; the first branch pipeline is composed of the first disc valve, the first Y-type filter, The first water pump, the first check valve, and the second butterfly valve are connected in sequence, and the first pressure gauge is installed on the pipeline between the first water pump and the first check valve; the second branch pipeline is composed of the third butterfly valve, the second Y Type filter, the second water pump, the second check valve, and the fourth butterfly valve are connected in sequence, and the second pressure gauge is installed on the pipeline between the second water pump and the second check valve;

The water inlet of the first hydraulic oil heat exchange equipment is connected to the fifth disc valve, and the water inlet of the second hydraulic oil heat exchange equipment is connected to the sixth disc valve. After the two are connected in parallel, they are connected to the parallel first branch pipeline through the cooling unit outlet pipeline. and the rear end of the second branch pipeline; the third pressure gauge is installed on the outlet pipeline of the cooling unit;

The water outlet of the first hydraulic oil heat exchange equipment is connected to the seventh disc valve, and the water outlet of the second hydraulic oil heat exchange equipment is connected to the eighth disc valve. After the two are connected in parallel, they are connected to the return water port of the cooling tower through the return water pipeline of the cooling unit;

The ninth disc valve is connected between the outlet water pipeline of the cooling unit and the return water pipeline of the cooling unit.

According to one aspect of the present invention, the cooling tower is a standard circular counter-flow cooling tower LBCM50 with a flow rate of 50m ³ /h and a power of 1.5KW.

According to one aspect of the present utility model, the water pump is a refrigeration cycle water pump TD80-28/2, with a flow rate of 60m ³ /h and a power of 7.5KW.

According to an aspect of the utility model, soft joints are respectively installed at both ends of the water pump.

The advantage that the utility model implements:

The utility model draws water from the water tank to the hydraulic oil equipment workshop through the circulating water pump, flows into each hydraulic oil heat exchanger through the water pipe, takes away the heat of the equipment, and returns it to the cooling tower with the pressure of the water pump, and returns to the water tank after being cooled by the cooling tower. The utility model minimizes the influence of the temperature rise of the system as a whole, and solves the heating problem in the hydraulic pump station through a high-performance, stable and economical solution.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the utility model more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model , for those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative work.

Fig. 1 is the pipeline schematic diagram of the utility model.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Referring to Fig. 1, the utility model includes a cooling tower 1, a water tank 2, two hydraulic oil heat exchange equipment 3-4, a plurality of disc valves 5-13, two Y-type filters 14-15, two water pumps 16-17 , Three pressure gauges 18-20 and two check valves 21-22.

The water outlet of cooling tower 1 is connected to the water inlet of water tank 2 through pipelines, and the water outlet of water tank 2 is connected to two parallel first branch pipelines and second branch pipelines; the first branch pipeline is composed of butterfly valve 5 and Y-type filter 14 , water pump 16, check valve 21, and butterfly valve 6 are connected in sequence, and pressure gauge 18 is installed on the pipeline between water pump 16 and check valve 21. The second branch pipeline is connected successively by disc valve 7, Y-type filter 15, water pump 17, check valve 22, disc valve 8, and pressure gauge 19 is installed on the pipeline between water pump 17 and check valve 22.

The water inlet of the hydraulic oil heat exchange device 3 is connected to the disc valve 9, and the water inlet of the hydraulic oil heat exchange device 4 is connected to the disc valve 10. After the two are connected in parallel, they are connected to the parallel first branch pipe and the second branch pipe through the outlet pipe of the cooling unit. the back end of the road. The pressure gauge 20 is installed on the water outlet pipeline of the cooling unit.

The water outlet of the hydraulic oil heat exchange device 3 is connected to the disc valve 11, and the water outlet of the hydraulic oil heat exchange device 4 is connected to the disc valve 12. After the two are connected in parallel, they are connected to the return water port of the cooling tower 1 through the return water pipeline of the cooling unit.

The disc valve 13 is connected between the outlet water pipeline of the cooling unit and the return water pipeline of the cooling unit.

Equipment selection:

Cooling tower: Standard circular counterflow cooling tower LBCM50 is used. The cooling tower of the hydraulic system has a flow rate of 50m ³ /h and a power of 1.5KW. The brand is Good Opportunity.

Water tank: The water tank of the hydraulic system is made of double-layer stainless steel plate, polyurethane foam for heat preservation, the thickness is 50mm, and the middle is filtered by a partition. The total volume of the water tank is 1.5m ³ .

Hydraulic oil heat exchange equipment: It consists of two heat exchangers, and the hydraulic oil temperature is 35 degrees.

Water pump: Southern water pump is adopted, TD80-28/2, the flow rate is 60m ³ /h, the power is 7.5KW, and the head of the pump is 28m. Install flexible joints at both ends of the pump.

Cooling water pipeline: made of galvanized pipe, and the outdoor part is insulated with rubber and plastic, t=20mm. Each heat exchanger inlet and outlet pipes are equipped with valves and pressure gauges.

Installation method:

The cooling tower, water tank, and water pump are installed outdoors on the second floor, and enter the hydraulic workshop along the outer wall through the main pipeline. After entering the workshop, they are arranged along the indoor wall and ground to the parts of water for each equipment (heat exchanger), and all branch pipes are equipped with stainless steel. Ball valve and water pressure gauge.

1. Cooling tower: adopt 10# channel steel base frame, the height is 1.2～1.5mm. After the channel steel is welded, it is polished smooth and coated with anti-rust paint. The channel steel and the ground are fixed with expansion bolts. The cooling tower and the channel steel are fixed by bolts.

2. Water tank: 6# channel steel base frame is used. After the channel steel is welded, it is polished smooth and coated with anti-rust paint. The channel steel and the ground are fixed with collision bolts.

3. Water pump: It is fixed by 10# channel steel base frame, and the channel steel is polished smooth after welding and coated with anti-rust paint. The channel steel and the ground are fixed with expansion bolts. Each pump is equipped with a simple rain cap. The inlet and outlet pipes of the water pump are equipped with rubber soft joints (shock absorption).

4. Main pipeline: The hydraulic cooling system adopts DN80 galvanized pipe, and the pipeline support is made of angle steel. After welding, it is polished smooth and coated with anti-rust paint. The outdoor part is insulated with 20mm thick rubber and plastic.

5. Tap water pipeline: PPR pipe with a diameter of DN25 is used, and the pipeline support is made of angle steel. After welding, it is polished smooth and coated with anti-rust paint. The outdoor part is insulated with 20mm thick rubber and plastic.

System principle:

The circulating water pump pumps water from the water tank to the hydraulic oil equipment workshop on the first floor, flows into each heat exchanger through the water pipe, takes away the heat from the equipment, and returns it to the cooling tower with the pressure of the water pump, and returns to the water tank after being cooled by the cooling tower.

Note: The cooling limit temperature of the cooling tower is infinitely close to the wet bulb void in the ambient temperature, and the actual cooling temperature is the wet bulb temperature in the ambient temperature + 1 to 2 degrees. The oil outlet temperature of the heat exchanger is infinitely close to the water outlet temperature of the heat exchanger, that is, when the oil outlet temperature of the heat exchanger is 35 degrees, the water outlet temperature of the heat exchanger is 35 degrees, and the water inlet temperature of the heat exchanger is 30 degrees (usually The design is calculated according to the temperature difference of 5 degrees). When the wet bulb temperature in the ambient temperature is higher than 28 degrees (the actual cooling temperature of the cooling tower is 1 to 2 degrees higher than the ambient wet bulb temperature), and the inlet water temperature of the heat exchanger is higher than 30 degrees, the heat exchanger cannot be guaranteed. The oil temperature is 35 degrees.

Bill of Materials:

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any skilled person familiar with the technology in the art can easily think of changes within the technical scope disclosed in the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (4)

1. A kind of 1. hydraulic power unit water cooling system, it is characterised in that：

   Composition includes：Cooling tower (1), water tank (2), two hydraulic oil heat transmission equipments (3~4), multiple dish valves (5~13), two Y Type filter (14~15), two water pumps (16~17), three pressure gauges (18~20) and two check-valves (21~22)；

   Connected mode is：The delivery port of cooling tower (1) is connected to the water inlet of water tank (2), the delivery port of water tank (2) by pipeline Connect two the first bye-passes and the second bye-pass in parallel；

   First bye-pass is by the first dish valve (5), the first y-type filter (14), the first water pump (16), first check-valve (21), Two dish valves (6) are sequentially connected, and first pressure table (18) is arranged on the pipeline between the first water pump (16) and first check-valve (21) On；Second bye-pass is by the 3rd dish valve (7), the second y-type filter (15), the second water pump (17), second check-valve (22), the 4th Dish valve (8) is sequentially connected, and second pressure gauge (19) is arranged on the pipeline between the second water pump (17) and second check-valve (22)；

   The water inlet of first hydraulic oil heat transmission equipment (3) connects the 5th dish valve (9), the water inlet of the second hydraulic oil heat transmission equipment (4) Mouth the 6th dish valve (10) of connection, the first bye-pass and second of parallel connection is connected to after both parallel connections by cooling down unit outlet pipeline The rear end of bye-pass；3rd pressure gauge (20) is arranged on cooling unit outlet pipeline；

   The delivery port of first hydraulic oil heat transmission equipment (3) connects the 7th dish valve (11), the water outlet of the second hydraulic oil heat transmission equipment (4) Mouth the 8th dish valve (12) of connection, the water return outlet of cooling tower (1) is connected to after both parallel connections by cooling down unit water return pipeline；

   9th dish valve (13) is connected between cooling unit outlet pipeline and cooling unit water return pipeline.
2. 2. hydraulic power unit water cooling system according to claim 1, it is characterised in that：The cooling tower (1) is standard type Circular counter-flow cooling tower LBCM50, flow 50m³/ h, power 1.5KW.
3. 3. hydraulic power unit water cooling system according to claim 1, it is characterised in that：The water pump (16~17) is freezing Water circulating pump TD80-28/2, flow 60m³/ h, power 7.5KW.
4. 4. hydraulic power unit water cooling system according to claim 1, it is characterised in that：Water pump (16~17) both ends point Connecting hose is not installed.