Middle-low pressure pump series water supply system

Abstract

The utility model discloses a water supply system with a medium-pressure pump and a low-pressure pump connected in series, which belongs to the technical field of pipeline connection and comprises a medium-pressure water delivery pipeline provided with a medium-pressure pump and a valve II and a low-pressure water delivery pipeline provided with a low-pressure pump and a valve VI. Branch pipelines with valves are arranged on the medium-pressure water conveying pipeline and the low-pressure water conveying pipeline, the branch pipelines are connected through connecting pipelines, the connecting pipelines and the branch pipelines are fixed through bell and spigot joints, and sealing layers are arranged on the outer walls of the ends of the spigot joints. The outer wall of the inner side of the sealing layer protrudes outwards to form a fixing layer, a small groove and a large groove are formed in the positions, corresponding to the sealing layer and the fixing layer, of the inner wall of the bell mouth, and the sealing layer is in an extruded state in the small groove. The inner wall of the end part of the socket is provided with a stop block which can stretch through a compression spring; according to the utility model, unnecessary power consumption and equipment maintenance cost are effectively avoided.

Description

Technical Field

[0001] The utility model relates to a water supply system, in particular to a series water supply system of medium and low pressure pumps, belonging to the technical field of pipeline connection. Background Art

[0002] In the existing blast furnace water pump house of a factory, there are medium pressure pumps and low pressure pumps, which supply water according to the required pressure. In the factory, the water supply pressure required in a large area is low, and the low pressure pumps are used for water supply, but the area range will change with the seasons; the water supply pressure required in a small area is high, and the medium pressure pumps are used for water supply.

[0003] When the water supply area of the low pressure pump is small, the full load operation of one low pressure pump can meet the water supply demand; when the water supply area is large, the water supply pressure is still insufficient and the current is easy to be overloaded and trip when one low pressure pump operates at full load. If two low pressure pumps are used for water supply at the same time, the load of each low pressure pump will be relatively small, which will bring unnecessary power consumption and equipment maintenance costs. Moreover, the medium pressure pump in the same pump house has a large self-power and is responsible for a small water supply area. When in use, the current is stable and the water supply pressure is surplus, which also causes waste of energy. Content of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a series water supply system of medium and low pressure pumps. When the water supply area of the low pressure pump is large, the water supply of the medium and low pressure pumps is connected in series by pipelines, so that both the medium and low pressure pumps can operate at high load without adding new low pressure pumps, effectively avoiding unnecessary power consumption and equipment maintenance costs; when the water supply area of the low pressure pump is small, the pipeline connecting the medium and low pressure pumps in series can be removed, so that the medium and low pressure pumps supply water to their respective areas respectively.

[0005] To solve the above technical problems, the technical solution adopted by the present utility model is as follows: A medium-low pressure pump series water supply system includes a medium-pressure water pipeline provided with a medium-pressure pump and valve II and a low-pressure water pipeline provided with a low-pressure pump and valve VI. Among them, valve II is located between the medium-pressure pump and the circulating water tank, and valve VI is located between the low-pressure pump and the circulating water tank; one end of the medium-pressure water pipeline and the low-pressure water pipeline is connected to a circulating water tank, and the other ends are respectively connected to a medium-pressure water supply area with a smaller area and a low-pressure water supply area with a larger area. Branch pipelines with valve III and valve IV are respectively provided on the medium-pressure water pipeline and the low-pressure water pipeline, and the two branch pipelines are connected through a connecting pipeline; the connecting pipeline and the branch pipeline are fixed through a detachable socket and spigot; the socket and spigot include a socket and a spigot. An outer wall of the end of the spigot is sleeved with a sealing layer, and an outer wall inside the sealing layer bulges outward to form a fixing layer; small grooves and large grooves are respectively formed on the inner wall of the socket corresponding to the positions of the sealing layer and the fixing layer, and the sealing layer is in a squeezed state in the small grooves; an inner wall of the end of the socket is further provided with a stop block that can be telescoped by a compression spring. When the compression spring is in the original length recovery state, the stop block extends out of the inner wall of the socket and catches the fixing layer to prevent the spigot from coming out; when the compression spring is in the compressed state, it is convenient for the spigot to be inserted.

[0006] A further improvement of the technical solution of the present utility model lies in that: the sealing layer is a waterproof rubber ring.

[0007] A further improvement of the technical solution of the present utility model lies in that: there are at least three layers of the sealing layer.

[0008] A further improvement of the technical solution of the present utility model lies in that: adjacent surfaces of the stop block and the fixing layer are both flat surfaces, and opposite surfaces are both arc surfaces.

[0009] A further improvement of the technical solution of the present utility model lies in that: at least two stop blocks are evenly distributed along the circumferential direction of the socket, and a receiving groove for receiving the stop block after the compression spring is compressed is provided on the inner wall of the socket.

[0010] A further improvement of the technical solution of the present utility model lies in that: the stop block is fixed to the compression spring by welding.

[0011] A further improvement of the technical solution of the present utility model lies in that: a check valve I and a check valve V are respectively provided between the medium-pressure pump and the branch pipeline on the medium-pressure water pipeline and between the low-pressure pump and the branch pipeline on the low-pressure water pipeline.

[0012] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model is:

[0013] The utility model is provided with branch pipes with valve III and valve IV on the medium-pressure water supply pipeline and the low-pressure water supply pipeline. The two branch pipes are connected through a connecting pipe. The connecting pipe and the branch pipes are fixed through socket joints that are easy to disassemble, connecting the medium-pressure water supply pipeline and the low-pressure water supply pipeline in series. When using the medium-pressure pump to supply water to the medium-pressure water supply area, it also supplies water to the low-pressure water supply area, solving the problems that when the water supply area of the low-pressure pump is large, the water supply pressure of a single low-pressure pump is insufficient and the load is too large, while turning on two low-pressure pumps simultaneously will bring unnecessary power consumption and equipment maintenance costs, and the surplus water supply pressure of the medium-pressure pump will cause energy waste; when the water supply area of the low-pressure pump is small, the pipeline connecting the medium-pressure and low-pressure pumps is removed, and valve III and valve IV are closed, so that the medium-pressure and low-pressure pumps supply water to their original areas respectively.

[0014] The front section of the outer surface of the socket of the utility model is sleeved with not less than three layers of waterproof rubber rings as a sealing layer. Small grooves matching the sealing layer are arranged at corresponding positions on the inner wall of the socket. The sealing layer is in a squeezed state in the small grooves, improving the sealing performance of the socket and spigot pipeline during use.

[0015] On the outer surface of the socket of the utility model, a fixing layer protrudes outward from the inner side of the sealing layer. A large groove matching the fixing layer is arranged at the corresponding position on the inner wall of the socket. In addition, a stop block that can be telescoped by a compression spring is arranged on the inner wall of the end of the socket. The stop blocks are evenly distributed along the circumferential direction of the socket and there are at least two. When the compression spring is in the original length recovery state, the stop blocks protrude from the inner wall of the socket, clamping the fixing layer to prevent the socket from being disengaged; when the compression spring is in the compressed state, it is convenient for the socket to be inserted.

[0016] The adjacent surfaces of the stop block and the fixing layer of the utility model are both flat surfaces, with better fixing effect; the opposite surfaces of the stop block and the fixing layer are both arc surfaces, facilitating the socket to be inserted into the socket better.

[0017] When disassembling the medium-pressure and low-pressure series-connected pipeline of the utility model, using tools to compress the compression spring can complete the disassembly conveniently and quickly.

[0018] The utility model is respectively provided with a check valve I and a check valve V between the medium-pressure pump and the branch pipe on the medium-pressure water supply pipeline and between the low-pressure pump and the branch pipe on the low-pressure water supply pipeline. When using the medium-pressure pump to supply water to the low-pressure water supply area at the same time, it can prevent the water flow from the medium-pressure water supply pipeline from entering the circulating water tank and all flowing to the low-pressure water supply area.

[0019] The stop block, compression spring, sealing layer, and valve of the utility model are all common materials in production and life, with convenient material selection, easy processing, and low cost. Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the connection structure of each pipeline of the utility model;

[0021] Figure 2 It is a cross-sectional view when the socket and spigot of the present utility model are connected;

[0022] Figure 3 It is a cross-sectional view of the socket of the present utility model;

[0023] Figure 4 It is a cross-sectional view of the spigot of the present utility model.

[0024] Among them, 1. Socket; 2. Spigot; 3. Stopper; 4. Compression spring; 5. Fixed layer; 6. Large groove; 7. Sealing layer; 8. Small groove; 9. Circulating water pool; 10. Medium-pressure water supply area; 11. Low-pressure water supply area; 12. Check valve I; 13. Valve II; 14. Medium-pressure pump; 15. Low-pressure pump; 16. Valve III; 19. Medium-pressure water pipeline; 20. Low-pressure water pipeline; 21. Valve IV; 22. Check valve V; 23. Valve VI; 24. Connecting pipeline. Specific embodiments

[0025] The present utility model will be further described in detail below in conjunction with embodiments:

[0026] As Figure 1 shown, a medium-low pressure pump series water supply system of the present utility model includes a medium-pressure water pipeline 19 and a low-pressure water pipeline 20, one end of which is connected to a circulating water pool 9 and the other end is respectively connected to a medium-pressure water supply area 10 with a smaller area and a low-pressure water supply area 11 with a larger area. There are a medium-pressure pump 14 and a low-pressure pump 15 providing power on the medium-pressure water pipeline 19 and the low-pressure water pipeline 20 respectively, as well as a valve II 13 located between the circulating water pool 9 and the medium-pressure pump 14 and a valve VI 23 located between the circulating water pool 9 and the low-pressure pump 15; branch pipelines respectively provided with a valve III 16 and a valve IV 21 are opened on the medium-pressure water pipeline 19 and the low-pressure water pipeline 20, and the two branch pipelines are connected through a connecting pipeline 24. The connecting pipeline 24 and the branch pipelines are fixed by a socket and spigot for easy disassembly, connecting the medium-pressure water pipeline 19 and the low-pressure water pipeline 20 in series. When the low-pressure pump water supply area 10 is large, while the medium-pressure pump 14 supplies water to the medium-pressure water supply area 10, it also supplies water to the low-pressure water supply area 11, improving the resource utilization rate of the medium-pressure pump 14 while saving the power consumption and equipment maintenance costs of using two low-pressure pumps 15 for water supply.

[0027] When the low-pressure pump water supply area is small, the pipeline connecting the medium-low pressure pumps is removed, and the valve III 16 and the valve VI 23 are closed, so that the medium-low pressure pumps supply water to their original water supply areas respectively.

[0028] In addition, check valves I 12 and check valves V 22 are respectively arranged between the medium-pressure pump 14 and the branch pipeline on the medium-pressure water supply pipeline 19 and between the low-pressure pump 15 and the branch pipeline. When the medium-pressure pump 15 is used to supply water to the low-pressure water supply area 11 at the same time, it can prevent the water flow from the medium-pressure water supply pipeline 19 from entering the circulating water tank 9 and all flowing to the low-pressure water supply area 11.

[0029] As Figure 2 shown, not less than three layers of waterproof rubber rings are sleeved on the front section of the outer surface of the socket 2 of the present utility model as the sealing layer 7, and small grooves 8 matching the sealing layer 7 are arranged at corresponding positions on the inner wall of the socket 1. When the sealing layer 7 is in the small groove 8, it is in a compressed state, improving the sealing performance of the socket and spigot pipeline during use;

[0030] On the outer surface of the socket 2, a fixing layer 5 protrudes outward from the inside of the sealing layer 7, and a large groove 6 matching the fixing layer 5 is arranged at the corresponding position on the inner wall of the socket 1. In addition, a stop block 3 that can be telescoped by a compression spring 4 is arranged on the inner wall of the end of the socket 1. The stop blocks 3 are evenly distributed along the circumferential direction of the socket 1 and there are at least two. When the compression spring 4 is in the original length recovery state, the stop block 3 protrudes from the inner wall of the socket to block the fixing layer 5 and prevent the socket 2 from being disengaged; when the compression spring 4 is in the compressed state, it is convenient for the socket 2 to be inserted; the adjacent surfaces of the stop block 3 and the fixing layer 5 are both flat surfaces, with a better fixing effect, and the opposite surfaces of the stop block 3 and the fixing layer 5 are both arc surfaces, facilitating the socket 2 to be better inserted into the socket 1; when disassembling the medium-low pressure series pipeline, using a tool to compress the compression spring 4 can complete the disassembly conveniently and quickly.

[0031] Usage method: When the low-pressure water supply area 11 is large, turn on the low-pressure pump 15 and the medium-pressure pump 14 at the same time, and open the check valve 12 and valve II 13 on the medium-pressure water supply pipeline 19, the valve III 16 and valve IV 21 on the branch pipeline, and the check valve V 22 and valve VI 23 on the low-pressure water supply pipeline 20, and connect the two branch pipelines with the connecting pipeline 24 to realize the series connection of the medium-low pressure water supply pipelines, so that the medium-pressure pump 14 supplies water to the original medium-pressure water supply area 10 and also supplies water to the low-pressure water supply area 11; when the low-pressure water supply area 11 is small, use a tool to compress the compression spring 4 into the groove on the inner wall of the socket 1 to separate the socket 1 and the socket 2, remove the connecting pipeline 24, and close the valve III 16 and valve IV 21 on the branch pipeline, so that the medium-pressure pump 14 and the low-pressure pump 15 supply water to the original designated areas respectively.

Claims

1. A medium- and low-pressure pump series water supply system, comprising a medium-pressure water delivery pipeline (19) provided with a medium-pressure pump (14) and a valve II (13) and a low-pressure water delivery pipeline (20) provided with a low-pressure pump (15) and a valve VI (23), wherein: The valve II (13) is located between the medium-pressure pump (14) and the circulating water pool (9), and the valve VI (23) is located between the low-pressure pump (15) and the circulating water pool (9); one end of the medium-pressure water pipeline (19) and the low-pressure water pipeline (20) are connected to the circulating water pool (9), and the other ends are respectively connected to a medium-pressure water supply area (10) with a smaller area and a low-pressure water supply area (11) with a larger area. The invention is characterized in that: the medium-pressure water pipeline (19) and the low-pressure water pipeline (20) are respectively provided with branch pipes with valves III (16) and valve IV (21), and the two branch pipes are connected by a connecting pipe (24); the connecting pipe (24) and the branch pipes are fixed by a socket that is easy to disassemble; The socket comprises a socket (1) and a spigot (2); a sealing layer (7) is sleeved on the outer wall of the end of the spigot (2), and the outer wall located inside the sealing layer (7) bulges outward to form a fixing layer (5); a small groove (8) and a large groove (6) are respectively provided on the inner wall of the socket (1) at positions corresponding to the sealing layer (7) and the fixing layer (5), and the sealing layer (7) is in a squeezed state in the small groove (8); a stopper (3) which is retracted and extended by a compression spring (4) is also provided on the inner wall of the end of the socket (1); when the compression spring (4) is in a state of restoring its original length, the stopper (3) extends out of the inner wall of the socket, clamps the fixing layer (5) and prevents the spigot from falling out; when the compression spring (4) is in a compressed state, the spigot is easily inserted.

2. A medium and low pressure pump series water supply system according to claim 1, characterized in that: The sealing layer (7) is a waterproof rubber ring.

3. A medium and low pressure pump series water supply system according to claim 1 or 2, characterized in that: The sealing layer (7) has no less than three layers.

4. A medium and low pressure pump series water supply system according to claim 1, characterized in that: The adjacent surfaces of the stopper (3) and the fixing layer (5) are both planes, and the facing away surfaces are both arc-shaped surfaces.

5. A medium and low pressure pump series water supply system according to claim 1, characterized in that: At least two stoppers (3) are evenly distributed along the circumference of the socket (1), and the inner wall of the socket is provided with a receiving groove for receiving the stoppers (3) after the compression spring (4) is compressed.

6. A medium and low pressure pump series water supply system according to claim 1, characterized in that: The stopper (3) is fixed on the compression spring (4) by welding.

7. A medium and low pressure pump series water supply system according to claim 1, characterized in that: A check valve I (12) and a check valve V (22) are respectively provided between the medium-pressure pump (14) and the branch pipeline on the medium-pressure water pipeline (19) and between the low-pressure pump (15) and the branch pipeline on the low-pressure water pipeline (20).

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