Shield pump flushing device

Abstract

The utility model discloses a canned motor pump flushing device which comprises a flushing pipe, the inlet end of the flushing pipe is communicated with a flushing liquid outlet of a canned motor pump, the outlet end of the flushing pipe is communicated with an upper drainage valve of a filter, and the inlet end and the outlet end of the filter are respectively communicated with the inlet end of a rectifying tower and the inlet end of the canned motor pump. And an exhaust valve is arranged at the uppermost end of the flushing pipe. In the utility model, the flushing pipe is led out from the flushing fluid outlet of the shield pump to the upper guide spraying valve of the closer filter, so that the length of the flushing pipe is shortened, the circulating pressure of the flushing fluid is ensured, the flushing fluid is circulated smoothly, the bearing is fully lubricated, and the heat at the position can be taken away in time, thereby avoiding high-temperature abrasion of the bearing and prolonging the service life of the bearing. The operation stability of the shield pump is improved, and the maintenance cost is reduced; in addition, the length of the flushing pipe is shortened, and consumption of pipe fittings or pipes is reduced accordingly.

Description

Technical Field

[0001] The utility model belongs to the technical field of shielded pump cooling, and in particular relates to a shielded pump flushing device. Background Art

[0002] At present, when flushing and cooling the shielded pump, the flushing pipe is often led from the flushing liquid outlet of the shielded pump to the gas phase end of the distillation tower. However, the distance between the flushing liquid outlet of the shielded pump and the gas phase end of the distillation tower is far, the flushing pipe is long, and the flushing liquid circulation pressure is low, which makes the flushing liquid circulation poor, the bearing is not fully lubricated, and the heat here cannot be taken away in time, which makes the bearing prone to high-temperature wear, which seriously affects the normal operation of the system and increases the maintenance cost. Utility Model Content

[0003] The utility model provides a shielded pump flushing device to overcome the defects of the prior art, which can improve the running stability of the shielded pump.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A shielded pump flushing device comprises a flushing pipe, the inlet end of the flushing pipe is connected to the flushing liquid outlet of the shielded pump, the outlet end of the flushing pipe is connected to the upper shower valve of the filter, and the inlet end and outlet end of the filter are respectively connected to the inlet end of the distillation tower and the shielded pump.

[0006] The beneficial effects of adopting the above technical solution are: the flushing pipe is led out from the flushing liquid outlet of the shielded pump to the upper shower valve of the closer filter, so as to shorten the length of the flushing pipe, ensure the circulating pressure of the flushing liquid, make the flushing liquid circulate smoothly, make the bearing fully lubricated and the heat here can be taken away in time, so as to avoid high-temperature wear of the bearing, thereby improving the running stability of the shielded pump and reducing maintenance costs; in addition, the length of the flushing pipe is shortened, and the consumption of pipe fittings or pipes is reduced accordingly.

[0007] In one embodiment, an exhaust valve is disposed at the uppermost end of the flushing pipe.

[0008] The beneficial effect of adopting the above technical solution is that an exhaust valve is arranged at the uppermost end of the flushing pipe to facilitate the exhaust of air in the shield pump cavity to avoid the shield pump running dry.

[0009] In one embodiment, the exhaust valve is a needle valve.

[0010] In one embodiment, the flushing pipe includes a first transverse connecting pipe having one end connected to the flushing liquid outlet on the shielded pump, and a first vertical connecting pipe having one end connected to the upper shower valve on the filter, and a plurality of second vertical connecting pipes and a plurality of second transverse connecting pipes are sequentially connected between the first transverse connecting pipe and the first vertical connecting pipe.

[0011] The beneficial effect of adopting the above technical solution is that the flushing liquid flowing out of the flushing liquid outlet on the shielded pump can flow into the upper shower valve of the filter through the first horizontal connecting pipe, several second vertical connecting pipes connected at intervals and the second horizontal connecting pipe and the first vertical connecting pipe at the end.

[0012] In one embodiment, arc-shaped elbows are connected between the first transverse connecting pipe and its adjacent second vertical connecting pipe, between the second vertical connecting pipe and its adjacent second transverse connecting pipe, and between the first vertical connecting pipe and its adjacent second transverse connecting pipe.

[0013] The beneficial effect of adopting the above technical solution is that the arc-shaped elbow can make the flushing liquid flow smoothly between the first horizontal connecting pipe and its adjacent second vertical connecting pipe, between the second vertical connecting pipe and its adjacent second horizontal connecting pipe, or between the first vertical connecting pipe and its adjacent second horizontal connecting pipe.

[0014] In one embodiment, the length of the flushing pipe is 2 to 5 m.

[0015] In one embodiment, the flushing tube is a stainless steel tube.

[0016] The beneficial effect of adopting the above technical solution is that the flushing pipe is a stainless steel pipe to reduce the corrosion effect of the flushing liquid on the flushing pipe, thereby further improving and ensuring that the shielded pump can run smoothly.

[0017] In one embodiment, a first flange for connecting to a flushing liquid outlet flange on a canned pump is provided at one end of the flushing pipe.

[0018] The beneficial effect of adopting the above technical solution is that one end of the flushing pipe can be flange-connected to the flushing liquid outlet on the shielded pump through the first flange.

[0019] In one embodiment, the other end of the flushing pipe is provided with a second flange for connecting to the upper shower valve flange on the filter.

[0020] The other end of the flushing pipe can be flange-connected to the upper shower valve on the filter through a second flange.

[0021] The beneficial effects of the utility model are:

[0022] The flushing pipe is led out from the flushing liquid outlet of the shielded pump to the upper shower valve of the closer filter to shorten the length of the flushing pipe, ensure the circulating pressure of the flushing liquid, make the flushing liquid circulate smoothly, make the bearing fully lubricated and the heat here can be taken away in time, so as to avoid high-temperature wear of the bearing, thereby improving the running stability of the shielded pump and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0024] in:

[0025] Figure 1 A schematic structural diagram of an embodiment of the utility model is shown;

[0026] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0027] Reference numerals:

[0028] 1-shielded pump, 101-flushing liquid outlet, 2-filter, 201-upper shower valve, 3-flushing pipe. DETAILED DESCRIPTION

[0029] The utility model will be further described below in conjunction with the accompanying drawings.

[0030] At present, when flushing and cooling the shielded pump 1, the flushing pipe 3 is often led from the flushing liquid outlet 101 of the shielded pump 1 to the gas phase end of the distillation tower. However, the distance between the flushing liquid outlet 101 of the shielded pump 1 and the gas phase end of the distillation tower is relatively far, the flushing pipe is relatively long, and the flushing liquid circulation pressure is relatively low, which makes the flushing liquid circulation poor, the bearing lubrication is insufficient, and the heat here cannot be taken away in time, which makes the bearing prone to high-temperature wear, which seriously affects the normal operation of the system and increases the maintenance cost.

[0031] The utility model provides a shielded pump flushing device, such as Figure 1 As shown, it includes a flushing pipe 3, the inlet end of the flushing pipe 3 is connected to the flushing liquid outlet 101 of the shielded pump 1, the outlet end of the flushing pipe 3 is connected to the upper shower valve 201 of the filter 2, and the inlet end and outlet end of the filter 2 are respectively connected to the inlet end of the distillation tower and the shielded pump 1.

[0032] It can be understood that the flushing pipe 3 is led out from the flushing liquid outlet 101 of the shielded pump 1 to the upper shower valve 201 of the closer filter 2, so as to shorten the length of the flushing pipe 3, ensure the circulating pressure of the flushing liquid, make the flushing liquid circulate smoothly, make the bearing fully lubricated and the heat here can be taken away in time, so as to avoid high-temperature wear of the bearing, thereby improving the running stability of the shielded pump 1 and reducing maintenance costs; in addition, the length of the flushing pipe 3 is shortened, and the consumption of pipe fittings or pipes is reduced accordingly.

[0033] It should be noted that, during the modification, only one end of the flushing pipe 3 needs to be connected to the upper shower valve 201 of the filter 2, and the upper shower valve 201 of the filter 2 can be used as a flushing liquid flow regulating valve, which makes the modification less difficult.

[0034] In one embodiment, an exhaust valve is provided at the uppermost end of the flushing pipe 3 .

[0035] It can be understood that the provision of an exhaust valve can facilitate the exhaust of air in the cavity of the canned pump 1 to prevent the canned pump 1 from running dry without liquid.

[0036] Specifically, the exhaust valve may be a DN15 needle valve.

[0037] In one embodiment, the flushing pipe 3 includes a first transverse connecting pipe having one end connected to the flushing liquid outlet 101 on the shielded pump 1, and a first vertical connecting pipe having one end connected to the upper shower valve 201 on the filter 2, and a plurality of second vertical connecting pipes and a plurality of second transverse connecting pipes are sequentially connected between the first transverse connecting pipe and the first vertical connecting pipe.

[0038] It can be understood that the flushing liquid flowing out of the flushing liquid outlet 101 on the shielded pump 1 can flow into the upper shower valve 201 of the filter 2 through the first horizontal connecting pipe, a plurality of second vertical connecting pipes connected at intervals and the second horizontal connecting pipe and the first vertical connecting pipe at the end.

[0039] In one embodiment, arc-shaped elbows are connected between the first transverse connecting pipe and its adjacent second vertical connecting pipe, between the second vertical connecting pipe and its adjacent second transverse connecting pipe, and between the first vertical connecting pipe and its adjacent second transverse connecting pipe.

[0040] It can be understood that the arc-shaped elbow allows the flushing liquid to flow smoothly between the first transverse connecting pipe and its adjacent second vertical connecting pipe, between the second vertical connecting pipe and its adjacent second transverse connecting pipe, or between the first vertical connecting pipe and its adjacent second transverse connecting pipe.

[0041] It should be noted that the first transverse connecting pipe, the second transverse connecting pipe, the first vertical connecting pipe and the second vertical connecting pipe are all DN25 pipelines, and the arc-shaped elbow is a DN25 elbow.

[0042] In one embodiment, the length of the flushing pipe 3 is 2-5 m, preferably 3.5 m.

[0043] In one embodiment, the flushing pipe 3 is a stainless steel pipe to reduce the corrosion effect of the flushing liquid on the flushing pipe 3, thereby further improving and ensuring that the shielded pump 1 can run smoothly.

[0044] In one embodiment, one end of the flushing pipe 3 is provided with a first flange for flange connection to the flushing liquid outlet 101 on the shielded pump 1, and the other end of the flushing pipe 3 is provided with a second flange for flange connection to the upper shower valve 201 on the filter 2.

[0045] It can be understood that the two ends of the flushing pipe 3 are flange-connected to the flushing liquid outlet 101 on the shielded pump 1 and the upper shower valve 201 on the filter 2 through the first flange and the second flange respectively.

[0046] In addition, after the transformation is completed and the pressure test is qualified, the shielded pump 1 can be operated and debugged.

[0047] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", 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 simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0048] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A shielded pump flushing device, characterized in that: It comprises a flushing pipe (3), the inlet end of the flushing pipe (3) being connected to the flushing liquid outlet (101) of the shielded pump (1), the outlet end of the flushing pipe (3) being connected to the upper shower valve (201) of the filter (2), and the inlet end and outlet end of the filter (2) being connected to the inlet end of the distillation tower and the shielded pump (1) respectively.

2. A shielded pump flushing device according to claim 1, characterized in that: An exhaust valve is provided at the uppermost end of the flushing pipe (3).

3. A shielded pump flushing device according to claim 2, characterized in that: The exhaust valve is a needle valve.

4. A shielded pump flushing device according to claim 1, characterized in that: The flushing pipe (3) comprises a first transverse connecting pipe having one end connected to the flushing liquid outlet (101) on the shielded pump (1), and a first vertical connecting pipe having one end connected to the upper shower valve (201) on the filter (2); a plurality of second vertical connecting pipes and a plurality of second transverse connecting pipes are sequentially connected between the first transverse connecting pipe and the first vertical connecting pipe.

5. A shielded pump flushing device according to claim 4, characterized in that: An arc-shaped elbow is connected between the first transverse connecting pipe and the adjacent second vertical connecting pipe, between the second vertical connecting pipe and the adjacent second transverse connecting pipe, and between the first vertical connecting pipe and the adjacent second transverse connecting pipe.

6. A shielded pump flushing device according to claim 1, characterized in that: The length of the flushing pipe (3) is 2 to 5 m.

7. A shielded pump flushing device according to claim 1, characterized in that: The flushing pipe (3) is a stainless steel pipe.

8. A shielded pump flushing device according to claim 1, characterized in that: One end of the flushing pipe (3) is provided with a first flange for flange connection to a flushing liquid outlet (101) on the shielded pump (1).

9. A shielded pump flushing device according to claim 1 or 8, characterized in that: The other end of the flushing pipe (3) is provided with a second flange for flange connection to the upper shower valve (201) on the filter (2).

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