Electrical water pipe pressing device and method

Abstract

The invention discloses an electrical water pipe pressing device, which belongs to the field of water pipe pressing devices and comprises a water tank, a water filling nozzle, a water pressing pipe, a water pump, a pressure sensor, a check valve, a pressure protector, a joint and a control box. Water is added into the water tank through the water injection port, when pressure testing is needed, the connector is connected to a cooling water pipeline of electrical equipment, then the water pump is controlled to work through the control box, the water pump works to pressurize water in the water tank, the water is pumped out through the connector and then pumped to the cooling water pipeline of the electrical equipment, and the water pressure is detected through the pressure sensor; when the pressure reaches 0.4 MPA, it is observed that the cooling water pipeline and the connector do not leak, the water pump continues to work, the pressure is increased to 0.6 MPA, then the pressure is kept for half an hour, whether the cooling water pipeline leaks or not is observed, when the water pump works abnormally and the water pressure is too large, the pressure protector acts to relieve pressure, and water backflow is prevented through the check valve.

Description

Technical Field

[0001] This patent relates to the technical field of water pipe pressure relief devices, and specifically to an electrical water pipe pressure relief device and method. Background Art

[0002] The cooling water circuits of IGBT, electronic switches, and water-cooled capacitors require pressure testing of the water pipes before they are put into operation. Since the cooling water pipes of electrical equipment, namely IGBT, electronic switches, and water-cooled capacitors, are plastic pipes, they need to be replaced according to their service life or routine maintenance needs. The replaced water pipes need to be re-pressure tested, so an electrical water pipe pressure testing device is required. Summary of the invention

[0003] The purpose of the present invention is to design an electrical water pipe pressure testing device and method in order to solve the problems raised in the background technology.

[0004] The technical solution of the present invention is as follows: an electrical water pipe pressure relief device, comprising a water tank, a water injection port, a pressure water pipe, a water pump, a pressure sensor, a check valve, a pressure protector, a joint, and a control box, wherein the water tank is provided with a water injection port on the upper part, a pressure water pipe is connected to the left side of the lower part of the water tank, a water pump is provided on the right side of the pressure water pipe, a pressure sensor is provided on the left side of the water pump on the pressure water pipe, a check valve is provided on the right side of the pressure sensor on the pressure water pipe, a pressure protector is provided on the left side of the pressure sensor on the pressure water pipe, a joint is provided at the left end of the pressure water pipe, and a control box is provided on the water tank.

[0005] Furthermore, a controller is installed in the control box, a box door is installed on the control box, a control panel is installed on the box door, an input end of the controller is electrically connected to a pressure sensor, and an output end of the controller is electrically connected to a water pump.

[0006] Furthermore, a power light, a stop light, and a running light are installed laterally on the upper portion of the control panel, and an emergency stop button, a stop button, and a running button are installed laterally on the lower portion of the control panel. The power light and the emergency stop button are connected in series with the power supply, the stop light and the running light are electrically connected to the output end of the controller, and the stop button and the running button are electrically connected to the input end of the controller.

[0007] Furthermore, the water tank is provided with a liquid level tube, and the liquid level tube is installed on the front wall of the water tank.

[0008] Furthermore, the lower ends of the water tank and the water pump are connected with a bearing plate, and universal wheels are respectively fixed to the four corners of the lower surface of the bearing plate.

[0009] A method for using an electrical water pipe pressure test device, adding water to a water tank through a water injection port, connecting a joint to a cooling water pipe of an electrical device when a pressure test is required, and then controlling a water pump through a controller in a control box, so that the water pump pressurizes the water in the water tank and pumps it out through the joint, and then pumps it to the cooling water pipe of the electrical device, and detects the water pressure through a pressure sensor, and when the pressure reaches 0.4MPA, observe whether the cooling water pipe and the joint are leaking, and if there is no leakage, the water pump continues to work to pressurize to 0.6MPA and then maintain the pressure for half an hour, and observe whether the cooling water pipe is leaking.

[0010] When the water pump works abnormally and the water pressure is too high, the pressure protector will release the pressure and prevent the water from flowing back through the check valve.

[0011] The pressure protector is a pressure relief valve, and the pressure relief water pressure is set to 0.65MPA.

[0012] When the controller fails and the water pump works uncontrollably, press the emergency stop button to cut off the power supply and shut down the water pump. When the controller needs the water pump to work normally, press the run button and the controller controls the water pump to work and the run light to light up. When the water pump needs to be stopped, press the stop button and the controller controls the water pump to stop working and the stop light to light up.

[0013] A cooling water circuit comprises an IGBT, an electronic switch and a water-cooled capacitor, wherein the IGBT, the electronic switch and the water-cooled capacitor are connected via a cooling water pipe, and the electrical water pipe pressure testing device is used to perform a pressure test on the cooling water pipe.

[0014] The remarkable effect of the present invention is that the present invention provides an electrical water pipe pressure testing device, which has the following beneficial effects. Through its structural design, the device adds water into the water tank through the water filling port. When a pressure test is required, the joint is connected to the cooling water pipeline of the electrical equipment, and then the water pump is controlled to work through the control box. The water pump pressurizes the water in the water tank and pumps it out through the joint, and then pumps it to the cooling water pipeline of the electrical equipment. The water pressure is detected by the pressure sensor. When the pressure reaches 0.4MPA, it is observed that there is no leakage in the cooling water pipeline and the joint. Then the water pump continues to work and pressurizes it to 0.6MPA and then maintains the pressure for half an hour to observe whether the cooling water pipeline leaks. When the water pump works abnormally and causes the water pressure to be too high, the pressure protector will operate to release the pressure, and the check valve is used to prevent water from flowing back, thereby realizing the pressurization detection of the cooling water pipeline of the electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the electrical water pipe pressure-pressing device of the present invention;

[0016] Figure 2 It is a structural schematic diagram of a cross-sectional view of a control box portion of the electrical water pipe pressure reducing device of the present invention.

[0017] In the figure, 1, water tank; 2, water inlet; 3, water pressure pipe; 4, water pump; 5, pressure sensor; 6, check valve; 7, pressure protector; 8, connector; 9, control box; 10, controller; 11, box door; 12, control panel; 13, power light; 14, stop light; 15, running light; 16, emergency stop button; 17, stop button; 18, running button; 19, liquid level tube; 20, load plate; 21, universal wheel DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper / lower end", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "setting / sleeving", "sleeve connection", "connection", etc. should be understood in a broad sense. For example, "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-2The present invention provides a technical solution: an electrical water pipe pressure device, comprising a water tank 1, a water injection port 2, a pressure water pipe 3, a water pump 4, a pressure sensor 5, a check valve 6, a pressure protector 7, a joint 8, and a control box 9. The water injection port 2 is installed on the upper part of the water tank 1, the pressure water pipe 3 is connected to the left side of the lower part of the water tank 1, the water pump 4 is installed on the right side of the pressure water pipe 3, the pressure sensor 5 is installed on the left side of the water pump 4 on the pressure water pipe 3, the check valve 6 is installed on the right side of the pressure sensor 5 on the pressure water pipe 3, the pressure protector 7 is installed on the left side of the pressure sensor 5 on the pressure water pipe 3, the joint 8 is installed on the left end of the pressure water pipe 3, and the control box 9 is installed on the water tank 1.

[0022] In the present invention, a controller 10 is installed in the control box 9, a box door 11 is installed on the control box 9, a control panel 12 is installed on the box door 11, an input end of the controller 10 is electrically connected to the pressure sensor 5, and an output end of the controller 10 is electrically connected to the water pump 4. The controller 10 uses a PLC controller, and its output end is connected to the control circuit of the water pump 4 to control the start and stop of the water pump 4.

[0023] In the present invention, a power light 13, a stop light 14, and an operation light 15 are installed horizontally on the upper part of the control panel 12, and an emergency stop button 16, a stop button 17, and an operation button 18 are installed horizontally on the lower part of the control panel 12. The power light 13 and the emergency stop button 16 are connected in series with the power supply, the stop light 14 and the operation light 15 are electrically connected to the output end of the controller 10, and the stop button 17 and the operation button 18 are electrically connected to the input end of the controller 10. The power supply, the power light 13 and the emergency stop button 16 are connected in series to supply power to the water pump 4. When a failure occurs in the controller 10 and causes the water pump 4 to work uncontrollably, the emergency stop button 16 is pressed to cut off the power supply and thus shut down the water pump 4. When the controller 10 normally requires the water pump 4 to work normally, the operation button 18 is pressed, and the controller 10 controls the water pump 4 to work and controls the operation light 15 to light up at the same time. When the water pump 4 needs to be stopped, the stop button 17 is pressed, and then the controller controls the water pump 4 to stop working and controls the stop light 14 to light up at the same time.

[0024] In the present invention, a liquid level tube 19 is provided on the water tank 1 , and the liquid level tube 19 is installed on the front wall of the water tank 1 , and the liquid level of the water tank 1 can be observed through the liquid level tube 19 .

[0025] In the present invention, a bearing plate 20 is connected to the lower ends of the water tank 1 and the water pump 4, and universal wheels 21 are respectively fixed to the four corners of the lower surface of the bearing plate 20. The bearing is carried by the bearing plate 20, and the universal wheels 21 on the bearing plate 20 facilitate movement of the device.

[0026] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and the appropriate controller 10 should be selected according to the actual situation to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0027] In this embodiment:

[0028] During operation, water is added to the water tank 1 through the water inlet 2. When a pressure test is required, the connector 8 is connected to the cooling water pipeline of the electrical equipment, and then the water pump 4 is controlled to work through the controller 10 in the control box 9. The water pump 4 pressurizes the water in the water tank 1 and pumps it out through the connector 8, and then pumps it to the cooling water pipeline of the electrical equipment. The water pressure is detected by the pressure sensor 5. When the pressure reaches 0.4MPA, the cooling water pipeline and the connector are observed to have no leakage. After that, the water pump 4 continues to work and pressurizes to 0.6MPA and then maintains the pressure for half an hour to observe whether the cooling water pipeline is leaking (if there is a leak, stop pressurizing and repair the leak). When the water pump 4 works abnormally and causes the water pressure to be too high, the pressure protector 7 is activated to release the pressure, and the check valve 6 is used to prevent water from flowing back. Among them, the pressure protector 7 can be a pressure relief valve, and the pressure relief valve can set the pressure relief water pressure to 0.65MPA for pressure relief.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrical water pipe pressure device, characterized in that: The invention comprises a water tank (1), a water inlet (2), a pressure water pipe (3), a water pump (4), a pressure sensor (5), a check valve (6), a pressure protector (7), a joint (8), and a control box (9). The water tank (1) is provided with a water inlet (2) at the top, the water tank (1) is connected to a pressure water pipe (3) at the left side of the bottom, the water pump (4) is provided on the right side of the pressure water pipe (3), the pressure sensor (5) is provided on the left side of the water pump (4) on the pressure water pipe (3), the check valve (6) is provided on the right side of the pressure sensor (5) on the pressure water pipe (3), the pressure protector (7) is provided on the left side of the pressure sensor (5) on the pressure water pipe (3), the joint (8) is provided at the left end of the pressure water pipe (3), and the control box (9) is provided on the water tank (1).

2. The electrical water pipe pressure device according to claim 1, characterized in that: A controller (10) is installed in the control box (9), a box door (11) is installed on the control box (9), a control panel (12) is installed on the box door (11), an input end of the controller (10) is electrically connected to the pressure sensor (5), and an output end of the controller (10) is electrically connected to the water pump (4).

3. The electrical water pipe pressure reducing device according to claim 2, characterized in that: The controller 10 is a PLC controller.

4. The electrical water pipe pressure reducing device according to claim 2, characterized in that: A power light (13), a stop light (14), and a running light (15) are installed on the upper part of the control panel (12) in a horizontal distribution, and an emergency stop button (16), a stop button (17), and a running button (18) are installed on the lower part of the control panel (12) in a horizontal distribution. The power light (13) and the emergency stop button (16) are connected in series with a power source, the stop light (14) and the running light (15) are electrically connected to an output end of a controller (10), and the stop button (17) and the running button (18) are electrically connected to an input end of the controller (10).

5. The electrical water pipe pressure reducing device according to claim 1, characterized in that: The water tank (1) is provided with a liquid level pipe (19), and the liquid level pipe (19) is installed on the front wall of the water tank (1).

6. The electrical water pipe pressure reducing device according to claim 1, characterized in that: The lower ends of the water tank (1) and the water pump (4) are connected to a bearing plate (20), and universal wheels (21) are respectively fixed to four corners of the lower surface of the bearing plate (20).

7. A method for using an electrical water pipe pressure reducing device, using the electrical water pipe pressure reducing device as claimed in claim 4, characterized in that: Water is added to the water tank (1) through the water inlet (2). When a pressure test is required, the connector (8) is connected to the cooling water pipeline of the electrical equipment. Then, the water pump (4) is controlled to work through the controller (10) in the control box (9). The water pump (4) works to pressurize the water in the water tank (1) and pump it out through the connector (8), and then pump it to the cooling water pipeline of the electrical equipment. The water pressure is detected by the pressure sensor (5). When the pressure reaches 0.4 MPa, the cooling water pipeline and the connector are observed for leakage. If there is no leakage, the water pump (4) continues to work to pressurize to 0.6 MPa and then maintain the pressure for half an hour to observe whether the cooling water pipeline is leaking. If there is leakage, the pressurization is stopped and the leaking part is repaired.

8. The method for using the electrical water pipe pressure reducing device according to claim 7, characterized in that: When the water pump (4) works abnormally and causes excessive water pressure, the pressure protector (7) is activated to release pressure, and the check valve (6) is used to prevent water from flowing back. The pressure protector (7) is set to release the pressure at 0.65 MPa.

9. The method for using the electrical water pipe pressure reducing device according to claim 7, characterized in that: When the controller (10) fails and causes the water pump (4) to work uncontrollably, the emergency stop button (16) is pressed to cut off the power supply and thereby shut down the water pump (4); when the controller (10) requires the water pump (4) to work normally, the operation button (18) is pressed and the controller (10) controls the water pump (4) to work and controls the operation light (15) to light up; when the water pump (4) needs to be stopped, the stop button (17) is pressed and the controller controls the water pump (4) to stop working and controls the stop light (14) to light up.

10. A cooling water circuit for performing a pressure test using the electrical water pipe pressure test device according to claim 4, characterized in that: The electronic switch and the water-cooled capacitor are connected via a cooling water pipe, and the electrical water pipe pressure test device is used to perform a pressure test on the cooling water pipe.

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