Portable water pump and nuclear power station water supply tank testing device

Abstract

The utility model provides a portable water pump and a nuclear power station water supply tank testing device. The portable water pump comprises a driving mechanism, a switching mechanism arranged on the driving mechanism, a pump mechanism arranged on the switching mechanism and an induction mechanism arranged on the pump mechanism. The driving mechanism is used for providing power for operation of the pump mechanism, the switching mechanism is detachably connected with the driving mechanism and the pump mechanism, the pump mechanism is used for being connected with a sampling pipe of a water supply tank and filling and draining the sampling pipe, and the sensing mechanism is used for sensing operation pressure in the pump mechanism. According to the portable water pump, connection of the driving mechanism and the pump mechanism is achieved through the switching mechanism, the sensing mechanism is arranged, the size of the whole portable water pump is reduced, the portable water pump is miniaturized, and the functions of forward and reverse water filling and drainage, pressure detection and the like are integrated in the miniaturized design; in addition, the switching mechanism is detachably connected with the driving mechanism and the pump mechanism, so that the portable water pump can be disassembled or assembled according to the field space requirement, and the overall carrying difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of a water supply tank testing device for a nuclear power plant, and more specifically, to a portable water pump and a water supply tank testing device for a nuclear power plant. Background Art

[0002] The auxiliary feedwater tank of the conventional island of a nuclear power plant is an important water storage device. The sampling tube of the feedwater tank is a connecting vessel structure of the feedwater tank, which plays the role of displaying the liquid level of the feedwater tank. A float trigger switch is set at each gradient on the sampling tube to display the liquid level of the feedwater tank. Every time a nuclear power plant is overhauled, the float trigger switch needs to be verified, so the sampling tube needs to be filled and drained; however, the current on-site space is extremely small, and the water pump used for filling and draining is large in size and difficult to carry. Utility Model Content

[0003] The utility model aims to provide a portable water pump and a test device for a water supply tank of a nuclear power plant, so as to solve the technical problem that the water pump used for filling and draining water in the prior art is large in size and difficult to carry in a narrow on-site space.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] In a first aspect, a portable water pump is provided, comprising:

[0006] A driving mechanism, a switching mechanism arranged on the driving mechanism, a pump mechanism arranged on the switching mechanism, and a sensing mechanism arranged on the pump mechanism; the driving mechanism is used to provide power for the operation of the pump mechanism, the switching mechanism is detachably connected to the driving mechanism and the pump mechanism, the pump mechanism is used to be connected to a sampling tube of a water supply tank and to fill and drain the sampling tube, and the sensing mechanism is used to sense the operating pressure in the pump mechanism.

[0007] By adopting the above technical solution, the adapter mechanism realizes the connection between the driving mechanism and the pump mechanism, and the pump mechanism is provided with a sensing mechanism, which reduces the volume of the entire portable water pump, miniaturizes the portable water pump, and integrates the forward and reverse charging and discharging, pressure detection and other functions in the miniaturized design; in addition, the adapter mechanism is detachably connected to the driving mechanism and the pump mechanism, so that the portable water pump can be disassembled or assembled according to the on-site space requirements, reducing the difficulty of overall transportation.

[0008] In one embodiment, the pump mechanism includes a pump body, a pump cavity arranged inside the pump body, and an impeller arranged in the pump cavity. The pump body is detachably connected to the adapter mechanism. The pump body is provided with an inlet and outlet connected to the pump cavity. The inlet and outlet are used to connect to the sampling tube. The impeller is connected to the driving mechanism and can rotate forward or reversely under the drive of the driving mechanism to fill or drain water from the sampling tube.

[0009] By adopting the above technical solution, the pump mechanism can fill and drain the sampling tube with water.

[0010] In one embodiment, the number of the inlet and outlet is two, and the two inlet and outlet are respectively arranged on the pump body.

[0011] By adopting the above technical solution, bidirectional filling and drainage of the pump mechanism is achieved.

[0012] In one embodiment, the sensing mechanism includes two sensing units, the sensing units are connected to the inlet and outlet in a one-to-one correspondence, and the sensing units are used to sense the operating pressure of the corresponding inlet and outlet.

[0013] By adopting the above technical solution, the operating pressure of the pump mechanism is monitored.

[0014] In one embodiment, the pump body is provided with a first surface and a second surface, the area of ​​the first surface is larger than the area of ​​the second surface, the first surface is connected to the transfer mechanism, and the inlet and outlet are located on the second surface.

[0015] By adopting the above technical solution, the stability of the connection between the pump body and the adapter mechanism and the convenience of connecting with the sampling tube in a small space are ensured.

[0016] In one embodiment, the first surface of the pump body is provided with a docking protrusion, the docking protrusion is provided with a docking hole connected to the pump cavity, the driving mechanism is provided with a power shaft inserted into the docking hole and connected to the impeller, and the power shaft is rotatably sealed with the docking hole.

[0017] The adoption of the above technical solution facilitates the connection between the pump body and the driving mechanism.

[0018] In one embodiment, the pump cavity is arranged along the circumference of the docking protrusion.

[0019] By adopting the above technical solution, the pump cavity is adapted to the rotation trajectory setting of the impeller.

[0020] In one embodiment, the pump body comprises a pump main body and a pump cover, an inner wall of the pump main body is provided with an annular groove, and the pump cover is arranged on the annular groove, so that the pump body forms the pump cavity.

[0021] By adopting the above technical solution, the convenience of maintenance work inside the pump cavity is improved.

[0022] In one embodiment, the adapter mechanism includes an adapter frame, and the adapter frame is provided with an adapter hole for the power shaft to pass through.

[0023] The adoption of the above technical solution facilitates the connection between the power shaft and the impeller.

[0024] In a second aspect, a nuclear power plant feed water tank testing device is provided, comprising a testing device body and the above-mentioned portable water pump, wherein the portable water pump is connected to the testing device body.

[0025] By adopting the above technical scheme, on the basis of the advantages of the portable water pump of the above embodiment, the nuclear power plant feed tank test device of this embodiment also has the following advantages: the portable water pump is integrated inside the nuclear power plant feed tank test device, and is an important component of the nuclear power plant feed tank test device. The nuclear power plant feed tank test device is used in the calibration work of the sampling tube liquid level switch of the auxiliary feed tank to avoid on-site climbing operations and improve safety. At the same time, it is equipped with a high-precision sensor, which is more accurate than the measurement method of a ruler, improves measurement efficiency, reduces personnel input, and greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a three-dimensional structural diagram of a portable water pump provided in an embodiment of the utility model.

[0028] Figure 2 It is a cross-sectional view of a portable water pump provided by an embodiment of the utility model.

[0029] Figure 3 It is a three-dimensional structural diagram of a pump body provided by an embodiment of the utility model.

[0030] The reference numerals in the figures are:

[0031] 100. Portable water pump;

[0032] 1. Driving mechanism; 2. Transfer mechanism; 3. Pump mechanism; 4. Induction mechanism;

[0033] 11. Power shaft; 21. Adapter hole; 31. Pump body; 32. Pump cavity; 33. Impeller; 41. Induction unit;

[0034] 311, inlet and outlet; 312, first surface; 313, second surface; 314, docking protrusion; 315, pump body; 316, pump cover;

[0035] 3141. Docking hole; 3151. Annular groove. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention, and do not indicate that a device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating relative importance or indicating the number of technical features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. The following is a more detailed description of the specific implementation of the present utility model in conjunction with specific embodiments:

[0040] like Figure 1 and Figure 2As shown, a portable water pump 100 provided by an embodiment of the utility model is applied to the maintenance operation of the auxiliary water supply tank of the conventional island of a nuclear power plant. Specifically, the sampling tube of the water supply tank is a communicating vessel structure of the water supply tank, which plays the role of displaying the liquid level of the water supply tank. A float trigger switch is set on each gradient of the sampling tube to display the liquid level of the water supply tank. The float switch needs to be verified in each maintenance operation, so the sampling tube needs to be filled and drained; the portable water pump 100 of this embodiment has a two-way filling and drainage function, is easy to assemble, has a small size, can operate in a smaller operating space, and improves the convenience of operation; the following is explained through a specific implementation method:

[0041] The portable water pump 100 of this embodiment includes:

[0042] A driving mechanism 1, an adapter mechanism 2 arranged on the driving mechanism 1, a pump mechanism 3 arranged on the adapter mechanism 2, and a sensing mechanism 4 arranged on the pump mechanism 3; the driving mechanism 1 is used to provide power for the operation of the pump mechanism 3, the adapter mechanism 2 is detachably connected to the driving mechanism 1 and the pump mechanism 3, the pump mechanism 3 is used to be connected to a sampling tube of a water supply tank and to fill and drain the sampling tube, and the sensing mechanism 4 is used to sense the operating pressure in the pump mechanism 3.

[0043] Here, it can be understood that the driving mechanism 1 refers to a mechanism for providing power; the driving mechanism 1 includes but is not limited to a motor;

[0044] The adapter mechanism 2 refers to a mechanism for connecting the drive mechanism 1 and the pump mechanism 3; the adapter mechanism 2 includes but is not limited to an adapter frame; the adapter mechanism 2 is detachably connected to the drive mechanism 1 and the pump mechanism 3, that is, the adapter mechanism 2 can be detachably connected to the drive mechanism 1 and the pump mechanism 3 through fasteners. In this embodiment, the fasteners include but are not limited to bolts; in addition, the adapter mechanism 2 also enables the drive mechanism 1 and the pump mechanism 3 to achieve modular design, and the operator can recombine the components according to different needs, which has universality;

[0045] The pump mechanism 3 is a mechanism for filling or draining water from the sampling tube; the pump mechanism 3 is used to be connected to the sampling tube of the water supply tank, the pump mechanism 3 is connected to the driving mechanism 1, and the driving mechanism 1 drives the pump mechanism 3 to drain or fill the sampling tube; specifically, the pump mechanism 3 generates positive pressure or negative pressure to inject water into the sampling tube or extract water from the sampling tube to realize the inspection of the sampling tube;

[0046] The sensing mechanism 4 refers to a mechanism for sensing the operating pressure in the pump mechanism 3 ; the sensing mechanism 4 is used to be connected to the pump mechanism 3 , and the sensing mechanism 4 includes but is not limited to a pressure sensor.

[0047] The working principle of the portable water pump 100 provided in this embodiment is as follows:

[0048] The driving mechanism 1 and the pump mechanism 3 are connected through the adapter mechanism 2. The pump mechanism 3 is provided with a sensing mechanism 4. The pump mechanism 3 is used to be connected to the sampling tube. The driving mechanism 1 drives the pump mechanism 3 to run forward or reverse, thereby realizing the water filling and drainage operations of the sampling tube, and then the operating pressure of the pump mechanism 3 is sensed by the sensing mechanism 4.

[0049] By adopting the above technical solution, the adapter mechanism 2 realizes the connection between the driving mechanism 1 and the pump mechanism 3, and the pump mechanism 3 is provided with a sensing mechanism 4, which reduces the volume of the entire portable water pump 100, makes the portable water pump 100 miniaturized, and integrates the functions of forward and reverse charging and discharging, pressure detection, etc. in the miniaturized design; in addition, the adapter mechanism 2 is detachably connected to the driving mechanism 1 and the pump mechanism 3, so that the portable water pump 100 can be disassembled or assembled according to the on-site space requirements, thereby reducing the difficulty of overall transportation.

[0050] Please also read Figure 3 In one embodiment, the pump mechanism 3 includes a pump body 31, a pump cavity 32 disposed inside the pump body 31, and an impeller 33 disposed in the pump cavity 32. The pump body 31 is detachably connected to the adapter mechanism 2. The pump body 31 is provided with an inlet and outlet 311 connected to the pump cavity 32. The inlet and outlet 311 is used to connect to the sampling tube. The impeller 33 is connected to the driving mechanism 1 and can rotate forward or reversely under the drive of the driving mechanism 1 to fill and drain the sampling tube.

[0051] Here, it can be understood that the pump mechanism 3 includes a pump body 31, a pump cavity 32 and an impeller 33. The pump body 31 refers to a component forming the pump cavity 32. The pump body 31 is used to be detachably connected to the adapter mechanism 2. The pump body 31 is also provided with an inlet and outlet 311, which is communicated with the pump cavity 32. The inlet and outlet 311 is used to be connected to the sampling tube, that is, the sampling tube is communicated with the pump cavity 32 through the inlet and outlet 311; the pump cavity 32 is arranged in the pump body 31, and the pump cavity 32 can be The pump chamber 32 is enclosed by a pump body 31; an impeller 33 is disposed in the pump chamber 32, and the impeller 33 is used to rotate under the drive of the driving mechanism 1. The driving mechanism 1 can drive the impeller 33 to rotate in the forward direction. At this time, a positive pressure is generated in the forward direction inside the pump chamber 32, driving the sampling tube connected to the pump chamber 32 to drain water; the driving mechanism 1 can drive the impeller 33 to rotate in the reverse direction. At this time, a negative pressure is generated in the forward direction inside the pump chamber 32, driving the sampling tube connected to the pump chamber 32 to fill with water.

[0052] By adopting the above technical solution, the pump mechanism 3 can realize the water filling and water drainage operations on the sampling tube.

[0053] In one embodiment, the number of the inlet and outlet 311 is two, and the two inlet and outlet 311 are respectively disposed on the pump body 31 .

[0054] Here, it can be understood that the two inlets and outlets 311 can realize the cyclic filling and drainage of the sampling tube, and the two inlets and outlets 311 are respectively connected to the sampling tubes, wherein, when the pump chamber 32 generates negative pressure in the positive direction, the water in the sampling tube enters the pump chamber 32 from the first inlet and outlet 311, and is discharged from the second inlet and outlet 311 and returns to the sampling tube again; similarly, when the pump chamber 32 generates positive pressure in the positive direction, the water in the sampling tube enters the pump chamber 32 from the second inlet and outlet 311, and is discharged from the first inlet and outlet 311 and returns to the sampling tube again, thereby realizing the filling and drainage of the sampling tube.

[0055] By adopting the above technical solution, bidirectional filling and drainage of the pump mechanism 3 is achieved.

[0056] In one embodiment, the sensing mechanism 4 includes two sensing units 41 . The sensing units 41 are connected to the inlet and outlet 311 in a one-to-one correspondence. The sensing units 41 are used to sense the operating pressure of the corresponding inlet and outlet 311 .

[0057] Here, it can be understood that the sensing unit 41 refers to a unit for sensing operating pressure, and the sensing unit 41 includes but is not limited to a pressure sensor; the sensing units 41 are connected one-to-one to the inlet and outlet 311, and the sensing units 41 are used to sense the operating pressure of the corresponding inlet and outlet 311.

[0058] By adopting the above technical solution, the operating pressure of the pump mechanism 3 is monitored.

[0059] In one embodiment, the pump body 31 has a first surface 312 and a second surface 313 , the area of ​​the first surface 312 is larger than the area of ​​the second surface 313 , the first surface 312 is connected to the adapter mechanism 2 , and the inlet and outlet 311 is located on the second surface 313 .

[0060] Here, it can be understood that the pump body 31 is provided with surfaces of different areas, including a first surface 312 and a second surface 313, the area of ​​the first surface 312 is larger than the area of ​​the second surface 313, the larger first surface 312 is used to connect with the adapter mechanism 2, and the smaller second surface 313 is used to set the inlet and outlet 311, which is convenient for connecting with the sampling tube in a narrow space.

[0061] By adopting the above technical solution, the stability of the connection between the pump body 31 and the adapter mechanism 2 and the convenience of connecting with the sampling tube in a narrow space are ensured.

[0062] In one embodiment, the first surface 312 of the pump body 31 is provided with a docking protrusion 314, the docking protrusion 314 is provided with a docking hole 3141 connected to the pump chamber 32, the driving mechanism 1 is provided with a power shaft 11 inserted into the docking hole 3141 and connected to the impeller 33, and the power shaft 11 is rotatably sealed with the docking hole 3141.

[0063] Here, it can be understood that the docking protrusion 314 refers to a protrusion used to dock with the driving mechanism 1. In the present embodiment, the docking protrusion 314 is a cylindrical protrusion, which is convenient for docking with the driving mechanism 1; the docking protrusion 314 is provided with a docking hole 3141, and the docking hole 3141 is connected to the pump cavity 32. The driving mechanism 1 is provided with a power shaft 11, and the power shaft 11 is used to be inserted into the docking hole 3141. The power shaft 11 extends into the pump cavity 32 and then connected to the impeller 33; at the same time, the power shaft 11 and the docking hole 3141 are rotationally sealed, that is, the rotating shaft can rotate in the docking hole 3141, and at the same time, the sealed connection between the power shaft 11 and the hole wall of the docking hole 3141 is ensured, which can be specifically achieved by a dynamic seal or sealing oil.

[0064] By adopting the above technical solution, the connection between the pump body 31 and the driving mechanism 1 is facilitated.

[0065] In one embodiment, the pump cavity 32 is disposed along the circumference of the docking protrusion 314 .

[0066] Here, it can be understood that the impeller 33 is located in the pump chamber 32, the power shaft 11 is connected to the impeller 33 and is used to drive the impeller 33 to rotate around the power shaft 11, so that the rotation trajectory of the impeller 33 is circular, and the shape of the pump chamber 32 is adapted to the setting of the rotation trajectory of the impeller 33.

[0067] By adopting the above technical solution, the pump chamber 32 is adapted to the rotation trajectory setting of the impeller 33 .

[0068] In one embodiment, the pump body 31 includes a pump main body 315 and a pump cover 316 . The inner wall of the pump main body 315 is provided with an annular groove 3151 . The pump cover 316 is covered on the annular groove 3151 , so that the pump body 31 forms a pump cavity 32 .

[0069] Here, it can be understood that the pump cover 316 can be detachably connected to the pump body 315 , and the annular groove 3151 can be exposed when the pump cover 316 is removed, which is conducive to the inspection of the interior of the pump cavity 32 .

[0070] By adopting the above technical solution, the convenience of maintenance work inside the pump cavity 32 is improved.

[0071] In one embodiment, the adapter mechanism 2 includes an adapter frame, and the adapter frame is provided with an adapter hole 21 for the power shaft 11 to pass through.

[0072] Here, it can be understood that the adapter frame is a hollow structure, and the adapter frame is provided with an adapter hole 21, and the adapter hole 21 can allow the power shaft 11 to pass through.

[0073] By adopting the above technical solution, the connection between the power shaft 11 and the impeller 33 is facilitated.

[0074] In a second aspect, a test device for a water supply tank of a nuclear power plant is provided, comprising a test device body and the above-mentioned portable water pump 100, wherein the portable water pump 100 is connected to the test device body.

[0075] By adopting the above technical scheme, on the basis of the advantages of the portable water pump 100 of the above embodiment, the nuclear power plant feed tank test device of this embodiment also has the following advantages: the portable water pump is integrated inside the nuclear power plant feed tank test device, and is an important component of the nuclear power plant feed tank test device. The nuclear power plant feed tank test device is used in the calibration of the sampling tube liquid level switch of the auxiliary feed tank to avoid on-site climbing operations and improve safety. At the same time, it is equipped with a high-precision sensor, which is more accurate than the measurement method of a ruler, improves measurement efficiency, reduces personnel input, and greatly improves production efficiency.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A portable water pump, characterized in that: include: A driving mechanism, a switching mechanism arranged on the driving mechanism, a pump mechanism arranged on the switching mechanism, and a sensing mechanism arranged on the pump mechanism; the driving mechanism is used to provide power for the operation of the pump mechanism, the switching mechanism is detachably connected to the driving mechanism and the pump mechanism, the pump mechanism is used to be connected to a sampling tube of a water supply tank and to fill and drain the sampling tube, and the sensing mechanism is used to sense the operating pressure in the pump mechanism.

2. The portable water pump according to claim 1, characterized in that The pump mechanism includes a pump body, a pump cavity arranged inside the pump body, and an impeller arranged in the pump cavity. The pump body is detachably connected to the adapter mechanism. The pump body is provided with an inlet and outlet communicated with the pump cavity. The inlet and outlet are used to be connected to the sampling tube. The impeller is connected to the driving mechanism and can rotate forward or reversely under the drive of the driving mechanism to fill and drain the sampling tube.

3. The portable water pump according to claim 2, characterized in that: The number of the inlet and outlet is two, and the two inlet and outlet are respectively arranged on the pump body.

4. The portable water pump according to claim 3, characterized in that: The sensing mechanism includes two sensing units, the sensing units are connected to the inlet and outlet in a one-to-one correspondence, and the sensing units are used to sense the operating pressure of the corresponding inlet and outlet.

5. The portable water pump according to claim 3, characterized in that: The pump body is provided with a first surface and a second surface, the area of ​​the first surface is larger than the area of ​​the second surface, the first surface is connected to the switching mechanism, and the inlet and outlet are located on the second surface.

6. The portable water pump according to claim 5, characterized in that The first surface of the pump body is provided with a docking protrusion, and the docking protrusion is provided with a docking hole connected with the pump cavity. The driving mechanism is provided with a power shaft inserted into the docking hole and connected with the impeller, and the power shaft is rotationally sealed with the docking hole.

7. The portable water pump according to claim 6, characterized in that The pump cavity is arranged along the circumference of the docking protrusion.

8. The portable water pump according to claim 7, characterized in that The pump body comprises a pump main body and a pump cover. The inner wall of the pump main body is provided with an annular groove. The pump cover is arranged on the annular groove, so that the pump body forms the pump cavity.

9. The portable water pump according to any one of claims 1 to 8, characterized in that: The adapter mechanism comprises an adapter frame, and the adapter frame is provided with an adapter hole for the power shaft to pass through.

10. A test device for a water tank in a nuclear power plant, characterized in that: The portable water pump comprises a test device body and the portable water pump according to any one of claims 1 to 9, wherein the portable water pump is connected to the test device body.

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