CN103868791A - Method and device for cooling fatigue testing machine - Google Patents

Abstract

The invention discloses a method for cooling a fatigue testing machine. The method comprises the following steps: (1) delivering tap water into a water tank through a water inlet pipe at the bottom of the water tank, and detecting the water temperature of a low temperature area in the water tank through a temperature control device to control water inlet of the water inlet pipe; (2) connecting the water tank with the fatigue testing machine through a circulating water outlet pipe and a circulating water inlet pipe, and delivering the water in the low temperature area of the water tank into the fatigue testing machine by the aid of a pump for temperature reduction to enable high-temperature water to enter the water tank from the circulating water outlet pipe. A device comprises the water tank, wherein the water tank is connected with a water source through the water inlet pipe; the temperature control device is arranged between the water inlet pipe and the water tank; a temperature sensor of the temperature control device is connected with the water tank; the outer end of the temperature sensor is connected with an N pole of a magnetic material; the N pole is connected with an S pole of a magnet through a spring; the S pole of the magnet is connected with the water inlet pipe through a connecting rod; a water hole is formed in the connecting rod; the side wall of the water tank is further connected with the fatigue testing machine through the circulating water outlet pipe and the circulating water inlet pipe. The device is water-saving, low in energy consumption, maintenance-free, easy to process, low in cost and good in effect.

Description

Cooling method and cooling device for fatigue testing machine

technical field

The invention belongs to the technical field of fatigue machine cooling, and in particular relates to a cooling method and a cooling device for a fatigue testing machine.

Background technique

During the service process of materials, most materials are not fractured due to insufficient tensile or impact properties, but mainly due to the continuous fatigue load during service. Therefore, before most materials are used, the fatigue performance test should be done first.

Fatigue performance tests usually require continuous loading, and a sample may be loaded millions of times, so the fatigue testing machine must be cooled. Usually, the cooling of the fatigue testing machine adopts a large water tank, and the tap water is artificially fed in. When the temperature of the water exceeds a certain temperature, the high-temperature water is released and new tap water is fed in at the same time. This kind of operation process not only wastes a lot of water, but also requires personnel to stay behind to observe the water temperature. Three shifts are required for 24 hours. There are also laboratories that may use dedicated cooling equipment, but the significant increase in cost is unaffordable for ordinary laboratories.

Contents of the invention

In order to solve the above-mentioned existing technical problems, the purpose of the present invention is to provide a cooling method and cooling device for fatigue testing machines, which have the characteristics of water saving, low energy consumption, maintenance-free, simple processing, low cost and good effect .

In order to achieve the above object, the technical solution adopted in the present invention is: a cooling method for a fatigue testing machine, comprising the following steps:

1) Input tap water into the water tank through the water inlet pipe at the bottom of the water tank, and detect the water temperature in the low-temperature area of the water tank through the temperature control device. When the temperature control device detects that the water temperature in the low-temperature area is lower than the lower limit of the set temperature, the temperature control device is turned off The water inlet pipe enters the water. When the temperature control device detects that the water temperature in the low temperature area is higher than the set temperature upper limit, the temperature control device opens the water inlet pipe to enter the water;

2) The water tank is connected to the fatigue testing machine through the circulating water outlet pipe and the circulating water inlet pipe. The water in the low-temperature area of the water tank is input into the fatigue testing machine by a pump to cool it down. The high-temperature water enters the water tank from the circulating water outlet pipe, and the excess water in the water tank Drain from the drain pipe at the top of the tank into the storage tank;

A cooling device for a fatigue testing machine, comprising a water tank, the water tank is connected to a water source through a water inlet pipe 1, a temperature control device is arranged between the water inlet pipe and the water tank, and the temperature sensor of the temperature control device is connected to the water tank, and the sensor The outer end of the thermostat is connected to the N pole of the magnetic material, and the N pole is connected to the S pole of the magnet through a spring, and the S pole of the magnet is connected to the water inlet pipe through a connecting rod. The water outlet pipe and the circulating water inlet pipe are connected with the fatigue testing machine.

The upper part of the water tank communicates with the water storage tank through a drain pipe.

The circulating water inlet pipe is provided with a pump.

The connecting rod is connected with a special joint arranged on the water inlet pipe.

The top of the water tank and the water storage tank is sealed with a fine wire mesh so that the circulating water can cool down.

The beneficial effects of the present invention are:

The present invention controls the water intake of the water inlet pipe through the temperature control device, which can realize the purpose of saving water resources and reducing labor costs. The use of tap water to cool down has the characteristics of low cost; because the present invention uses less electrical appliances and has the characteristics of low energy consumption, the entire device structure Simple, easy to process, easy to maintain, low cost and good cooling effect.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a schematic diagram of the low temperature state of the temperature control device of the present invention.

Fig. 3 is a schematic diagram of the high temperature state of the temperature control device of the present invention.

Fig. 4 is a schematic diagram of the present invention when the water inlet pipe is closed.

Fig. 5 is a schematic diagram of the present invention when the water inlet pipes are connected.

Detailed ways

The structural principle and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

A cooling method for a fatigue testing machine, comprising the following steps:

1) Input tap water into the water tank through the water inlet pipe at the bottom of the water tank, and detect the water temperature in the low-temperature area of the water tank through the temperature control device. When the temperature control device detects that the water temperature in the low-temperature area is lower than the lower limit of the set temperature, the temperature control device is turned off The water inlet pipe enters the water. When the temperature control device detects that the water temperature in the low temperature area is higher than the set temperature upper limit, the temperature control device opens the water inlet pipe to enter the water;

2) The water tank is connected to the fatigue testing machine through the circulating water outlet pipe and the circulating water inlet pipe. The water in the low-temperature area of the water tank is input into the fatigue testing machine by a pump to cool it down. The high-temperature water enters the water tank from the circulating water outlet pipe, and the excess water in the water tank Drain from the drain pipe at the top of the tank into the storage tank;

Referring to Figures 1, 2, and 3, a cooling device for a fatigue testing machine includes a water tank 2, which is connected to a water source through a water inlet pipe 1, and a temperature control device 14 is arranged between the water inlet pipe and the water tank. The temperature sensor 6 of the control device 14 is connected with the water tank, the outer end of the temperature sensor 6 is connected with the N pole 7 of the magnetic material, the N pole 7 is connected with the S pole 9 of the magnet through the spring 8, and the S pole 9 of the magnet is connected with the connecting rod 10 Connected to the water inlet pipe, the connecting rod 10 is provided with a water hole 12, and the side wall of the water tank 2 is also connected to the fatigue testing machine 15 through the circulating water outlet pipe 3 and the circulating water inlet pipe 4.

The upper part of the water tank 2 communicates with the water storage tank 13 through the drain pipe 11 .

The circulating water inlet pipe 4 is provided with a pump 5 .

Referring to FIGS. 4 and 5 , the connecting rod 10 is connected to a special joint 16 provided on the water inlet pipe 1 .

The top of the water tank 2 and the water storage tank 13 is not provided with a cover, and is sealed with a fine wire mesh so that the circulating water cools down.

The working principle of the present invention is:

There is a water hole on the water inlet pipe 1. If the insertion connecting rod 10 is deep, the tap water will pass through. If the insertion connecting rod 10 is shallow, the tap water will not pass through, so that water can be passed into the water tank 2 or stop. There is a circulating water outlet pipe 3 on the side of the water tank 2, and the circulating water outlet pipe 3 passes low-temperature water into the fatigue testing machine that needs to be cooled, and the temperature of the fatigue testing machine is reduced and the water temperature is raised through conduction. The heat of the fatigue machine will be taken away by the circulating water inlet pipe 4, and the water that the temperature has raised passes into the water tank 2. In order to increase the flow rate of the circulating water, a pump 5 is installed on the circulating water inlet pipe 4. In order to ensure that when the water temperature of the water tank 2 is higher than the specified temperature, tap water can be passed through, and the temperature sensor 6 of the temperature control device is immersed in the cooling water through the wall of the water tank 2. The temperature sensor is a metal material resistant to water corrosion and has excellent heat conduction. Performance, can transfer heat to magnetic material N pole 7, magnetic material N pole 7 has a Curie temperature corresponding to the specified water temperature, when the temperature is lower than the lower limit of the set temperature zone, magnetic material N pole 7 will attract magnet S pole 9, Thereby the connecting rod 10 is driven, so that water cannot flow into the water tank 2 from the water inlet pipe 1; when the temperature of the water in the water tank 2 is higher than the upper limit of the lower limit of the set temperature zone, the magnetism of the N pole 7 of the magnetic material will disappear, and the S pole 9 of the magnet will no longer be attracted , under the presumption of the spring 8, the S pole 9 of the magnet will be separated from the N pole 7 of the magnetic material, and the other end of the S pole 9 of the magnet is connected with the connecting rod 10, which drives the connecting rod 10 to enter the water inlet pipe 1 to a deeper level, through the connection The hole on the bar 10, the tap water with lower temperature enters the water tank 2. At the same time, the water tank 2 is higher than the water inlet pipe 1, and a drain pipe 11 is installed at a certain distance. The function of the drain pipe 11 is that when the water inlet pipe flows into low-temperature water, the low-temperature water has a low temperature and a high density. Pipe 11 discharges automatically, flows into water storage irrigation.

Claims (6)

1. for a cooling means for fatigue tester, it is characterized in that, comprise the following steps:

1) tap water is input in water tank by the water inlet pipe of water tank bottom, detect the water temperature of low-temperature space in water tank by attemperating unit, when water temperature that attemperating unit detects low-temperature space lower than established temperature under in limited time, attemperating unit is closed water inlet pipe water inlet, when water temperature that attemperating unit detects low-temperature space higher than established temperature in limited time, attemperating unit is opened water inlet pipe water inlet;

2) water tank is connected with fatigue tester with circulation water inlet pipe by recycling outlet, with pump by the water input fatigue tester of water tank low-temperature space, to its cooling, high-temperature water enters water tank from recycling outlet, and the superfluous water in water tank enters water tank from the drainpipe of tank top.

2. the cooling device for fatigue tester, include water tank (2), it is characterized in that, the water inlet pipe (1) that passes through of water tank (2) is connected with water source, between water inlet pipe and water tank, be provided with attemperating unit, the temperature detector (6) of attemperating unit is connected with water tank, the outer end of temperature detector (6) is connected with the magnetic material N utmost point (7), the N utmost point (7) is connected with the S utmost point (9) of magnet by spring (8), the S utmost point (9) of magnet is connected with water inlet pipe by connecting rod (10), connecting rod (10) is provided with water hole (12), the sidewall of water tank (2) is also by recycling outlet (3), circulation water inlet pipe (4) is connected with fatigue tester.

3. a kind of cooling device for fatigue tester according to claim 2, is characterized in that, described water tank (2) top is connected with water tank by drainpipe (11).

4. a kind of cooling device for fatigue tester according to claim 2, is characterized in that, described circulation water inlet pipe (4) is provided with pump (5).

5. a kind of cooling device for fatigue tester according to claim 2, is characterized in that, described connecting link 10 is connected with the special joint being located on water inlet pipe 1.

6. a kind of cooling device for fatigue tester according to claim 2, is characterized in that, described water tank 2 and water tank 13 tops seal by filamentary webs.

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