CN210531215U - Balance water pipeline of water supply pump - Google Patents

Abstract

The utility model discloses a balanced water pipeline of feed pump, including the water pump, left side department installs the import on the water pump, right side department installs the export on the water pump, all install the chucking seal structure that the structure is the same in import and the export, water pump top department installs the oxygen-eliminating device, install the water pipe between oxygen-eliminating device and the water pump, install the stop valve on the water pipe, the utility model relates to a water pump technology field, this balanced water pipeline of feed pump, "balance disk" like a unsteady liquid lubrication bearing, have 2% -8% of rated flow liquid to reveal away from the balance disk at balanced axial force in-process, the liquid of revealing away is called "balanced water", more serious can produce the cavitation phenomenon, cause the running noise big, and pump vibration aggravation has greatly shortened life. The design method is that the balance water is connected to a deaerator through a pipeline, the deaerator has a large volume and the vertical height of a pump inlet is more than 10 meters.

Description

Balance water pipeline of water supply pump

Technical Field

The utility model relates to a water pump technical field specifically is a balanced water pipeline of feed pump.

Background

The high-pressure boiler feed pump matched with the power plant is a multistage centrifugal pump, the axial force of the high-pressure boiler feed pump is balanced by a balance disc structure, the technology for producing the pump with the structure is mature day by day, and the existing domestic equipment can meet the requirement of being matched with the power plant with more than 95 percent. However, as power plants become more and more, domestic power consumption tends to be saturated, and with the change of design concepts of the power plants, the purpose of saving energy is achieved by controlling the generated energy through continuously changing working conditions, which is a common consensus of various power plants. This patent aims at solving the washing problem of water-feeding pump operation at low flow state to pump internal flow channel.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to the not enough of prior art, the utility model provides a balanced water pipeline of feed pump has solved current water pump and has moved the problem of erodeing to pump internal flow channel at low discharge state.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a balanced water pipeline of feed pump, includes the water pump, left side department installs the import on the water pump, right side department installs the export on the water pump, all install the same chucking seal structure of structure in import and the export, water pump top department installs the oxygen-eliminating device, install the water pipe between oxygen-eliminating device and the water pump, install the stop valve on the water pipe, just be located on the water pipe and install the check valve under the stop valve, just be located the check valve bottom on the water pipe and install the pressure gauge.

Preferably, the clamping and sealing structure comprises a pair of first supporting rods with the same structure, the pair of first supporting rods is movably connected with the outer annular surface of the outlet, a pair of springs with the same structure are installed in the pair of first supporting rods, a pair of second supporting rods with the same structure are installed on the pair of springs, a first clamping ring and a second clamping ring are respectively installed on the pair of second supporting rods, a pair of first screw holes with the same structure are formed in the first clamping ring, a pair of first bolts with the same structure are inserted in the second clamping ring, the pair of first bolts are connected with the first clamping ring through the pair of first screw holes, a pair of second screw holes with the same structure are formed in the first clamping ring and the second clamping ring, and a pair of clamping parts with the same structure are inserted in the pair of second screw holes.

Preferably, the clamping portion comprises a second bolt, the second bolt is spirally connected with a second screw hole, a pressing plate is movably mounted on the front end face of the second bolt, a pair of guide pillars with the same structure are mounted on the left side and the right side of the pressing plate, and the pair of guide pillars penetrates through the first clamping ring.

Preferably, a rubber pad is attached to an inner wall surface of the pressure plate.

Preferably, a handle is mounted on a rear end surface of the first bolt.

Preferably, the inlet and the outlet are provided with a pair of sealing gaskets with the same structure.

Preferably, a top column is arranged between the water pipe and the deaerator.

Preferably, the water pipe has an "L" shape.

Advantageous effects

The utility model provides a balanced water pipeline of feed pump. The water supply pump balance water pipeline has the advantages that the balance disc is like a floating liquid lubrication bearing, liquid with the rated flow rate of 2% -8% leaks out of the balance disc in the process of balancing axial force, and the leaked liquid is called balance water. In the prior art, balance water is connected to an inlet of a pump through a section of pipeline, and the method is simple and feasible. The balance water pump is only suitable for places with almost unchanged working conditions, when the water feeding pump operates in a small flow (generally 25% of rated flow), the proportion of balance water to total flow is greatly increased, the pressure difference between the front and the back of the balance disc can reach 20MPa, and the temperature of the balance water is higher than that of a normal medium, so that the high-temperature balance water directly enters the pump inlet and continuously enters the pump inlet through the balance disc to become balance water, the medium temperature in the reciprocating circulating pump is higher and higher, the scouring corrosion of partially vaporized liquid to the flow channel in the pump is very serious, the cavitation phenomenon is generated more seriously, the operation noise is high, the pump vibration is intensified, and the service life is greatly shortened. The design method is that balance water is connected to the deaerator through a pipeline, the deaerator is large in volume and vertical to the pump inlet and is more than 10 meters high, the device can increase the tightness and the sealing performance of the external pipeline and the inlet and the outlet through the clamping sealing structures on the inlet and the outlet, the external pipeline is prevented from falling off, or water leakage is avoided due to long-time operation looseness, and the equipment can operate more stably.

Drawings

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

Fig. 2 is a schematic view of the clamping and sealing structure of the present invention.

Fig. 3 is a schematic top view of the clamping and sealing structure of the present invention.

In the figure: 1. a water pump; 2. an inlet; 3. an outlet; 4. a deaerator; 5. a water pipe; 6. a stop valve; 7. a check valve; 8. a pressure gauge; 9. a first support bar; 10. a spring; 11. a second support bar; 12. a first clamping ring; 13. a second clamping ring; 14. a first bolt; 15. a second bolt; 16. pressing a plate; 17. a guide post; 18. a rubber pad; 19. a handle; 20. a gasket; 21. and (4) a top pillar.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a water supply pump 1 balance water pipe 5 path comprises a water pump 1, wherein an inlet 2 is arranged at the left side of the water pump 1, an outlet 3 is arranged at the right side of the water pump 1, clamping seal structures with the same structure are arranged on the inlet 2 and the outlet 3, a deaerator 4 is arranged at the top of the water pump 1, a water pipe 5 is arranged between the deaerator 4 and the water pump 1, a stop valve 6 is arranged on the water pipe 5, a check valve 7 is arranged on the water pipe 5 and below the stop valve 6, a pressure gauge 8 is arranged on the water pipe 5 and at the bottom of the check valve 7, the clamping seal structures comprise a pair of first support rods 9 with the same structure, a pair of first support rods 9 are movably connected with the outer annular surface of the outlet 3, a pair of springs 10 with the same structure are arranged in the pair of first support rods 9, a pair of second support rods 11 with, a first clamping ring 12 and a second clamping ring 13 are respectively mounted on the pair of second support rods 11, a pair of first screw holes with the same structure are formed in the first clamping ring 12, a pair of first bolts 14 with the same structure are inserted into the second clamping ring 13, the pair of first bolts 14 are connected with the first clamping ring 12 through the pair of first screw holes, a pair of second screw holes with the same structure are formed in the first clamping ring 12 and the second clamping ring 13, a pair of clamping portions with the same structure are inserted into the pair of second screw holes, each clamping portion comprises a second bolt 15, the second bolt 15 is spirally connected with the second screw hole, a pressing plate 16 is movably mounted on the front end face of the second bolt 15, a pair of guide posts 17 with the same structure are mounted on the left side and the right side of the pressing plate 16, the pair of guide posts 17 penetrate through the first clamping ring 12, and a rubber pad 18 is mounted on the inner wall face of the pressing plate 16, install handle 19 on the rear end face of first bolt 14, install the sealed pad 20 that a pair of structure is the same on import 2 and the export 3, install fore-set 21 between water pipe 5 and the oxygen-eliminating device 4, its shape of water pipe 5 is "L" shape.

The following components are provided according to the scheme:

a spring: and the extension spring with the elastic coefficient of 20N/cm is used for pulling back the first clamping ring and the second clamping ring so as to tightly insert the external pipeline into the inlet and the outlet.

Sealing gasket: is made of rubber and is used for increasing the sealing property between the external pipeline and the inlet and the outlet.

Rubber pad: the friction force between the pressing plate and the external pipeline is increased.

Guide pillar: the second bolt is used for fixing the pressing plate, and the pressing plate cannot rotate and moves forwards horizontally when the second bolt is screwed and the pressing plate is pushed forwards.

All the electrical components in the present application are connected with the power supply adapted to the electrical components through the wires, and an appropriate controller should be selected according to actual conditions to meet the control requirements, and specific connection and control sequences should be obtained.

Example (b): a pipeline is connected to the deaerator 4 from a balance water flange, and a stop valve 6, a check valve 7 and a pressure gauge are additionally arranged on the pipeline. The check valve 7 can ensure that water in the deaerator 4 can not flow back to the inside of the pump, the pump equipment can be conveniently removed for maintenance when the pump is stopped, the stop valve 6 is normally open, the check valve 7 is closed only when the check valve is maintained, meanwhile, pressure measuring points are additionally arranged on a balanced water pipe 5, the pressure detection of balanced water can timely reflect whether the balanced axial force condition is normal or not, when an external pipeline is connected to an inlet 2 or an outlet 3, the pipeline is firstly connected to a corresponding position, then the first support rod 9 is pulled from two sides to enable the first clamping ring 12 and the second clamping ring 13 to be mutually buckled, then the first bolt 14 is screwed into the first screw hole to enable the first clamping ring 12 and the second clamping ring 13 to be mutually fixed and sleeved outside the external pipeline, then the first clamping ring 12 and the second clamping ring 13 are lifted manually, the second bolt 15 is screwed to enable the second bolt 15 to push the pressing plate 16 inwards along the second screw hole, the pressing plate 16 is pressed tightly on the external pipeline, the first clamping ring 12 and the second clamping ring 13 are fixed outside the pipeline, then the person loosens the first clamping ring 12 and the second clamping ring 13, the second supporting rod 11 is tightened inwards under the pulling of the spring 10, the external pipeline is tightly inserted on the inlet 2 or the outlet 3, the external pipeline is prevented from being separated, and the sealing performance is improved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a balanced water pipeline of feed pump, includes water pump (1), its characterized in that, left side department installs import (2) on water pump (1), right side department installs export (3) on water pump (1), all install the chucking seal structure that the structure is the same on import (2) and export (3), water pump (1) top department installs oxygen-eliminating device (4), install water pipe (5) between oxygen-eliminating device (4) and water pump (1), install stop valve (6) on water pipe (5), on water pipe (5) and be located and install check valve (7) under stop valve (6), on water pipe (5) and be located check valve (7) bottom and install pressure gauge (8).

2. The balanced water pipeline of a water feeding pump as claimed in claim 1, wherein the clamping and sealing structure comprises a pair of first supporting rods (9) with the same structure, the pair of first supporting rods (9) is movably connected with the outer annular surface of the outlet (3), a pair of springs (10) with the same structure are installed in the pair of first supporting rods (9), a pair of second supporting rods (11) with the same structure are installed on the pair of springs (10), a first clamping ring (12) and a second clamping ring (13) are respectively installed on the pair of second supporting rods (11), a pair of first screw holes with the same structure are formed in the first clamping ring (12), a pair of first bolts (14) with the same structure are inserted in the second clamping ring (13), the pair of first bolts (14) are connected with the first clamping ring (12) through the pair of first screw holes, and a pair of second screw holes with the same structure are formed in the first clamping ring (12) and the second clamping ring (13), and a pair of clamping parts with the same structure are inserted in the pair of second screw holes.

3. The balanced water pipeline of a feed water pump as claimed in claim 2, wherein the clamping portion comprises a second bolt (15), the second bolt (15) is spirally connected with a second screw hole, a press plate (16) is movably mounted on the front end surface of the second bolt (15), a pair of guide pillars (17) with the same structure are mounted at the left side and the right side of the press plate (16), and the pair of guide pillars (17) penetrate through the first clamping ring (12).

4. A balanced water circuit for a feed pump according to claim 3, characterized in that the inner wall of the pressure plate (16) is fitted with a rubber gasket (18).

5. A balanced water circuit for a feed pump according to claim 2, characterized in that a handle (19) is mounted on the rear end face of the first bolt (14).

6. A balanced water circuit for a feed pump according to claim 1, characterized in that a pair of identically constructed gaskets (20) are mounted on the inlet (2) and the outlet (3).

7. A feed pump balance water circuit according to claim 1, characterized in that a top column (21) is installed between the water pipe (5) and the deaerator (4).

8. A feed pump balance water circuit according to claim 1, characterized in that said water pipe (5) is "L" shaped.

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