Arrangement structure for preventing water pump from bearing overlarge radial water hammer pressure

Abstract

The utility model relates to an arrangement structure for preventing a water pump from bearing overlarge radial water hammer pressure. The utility model is applicable to the field of pressurized water supply engineering. The technical problem to be solved by the utility model is to provide an arrangement structure for preventing the water pump from bearing overlarge radial water hammer pressure. According to the technical scheme, the arrangement structure for preventing the water pump from bearing the overlarge radial water hammer pressure is characterized in that a pressurizing water pump, an expansion joint, a check valve and a stiffening ring are sequentially arranged on a pressure pipeline in the water flow direction, and the stiffening ring is arranged on the pressure pipeline in a sleeving mode and arranged in an anchor block; the number of the stiffening rings is at least three. The utility model has the beneficial effects that the expansion joint and the check valve are sequentially arranged at the downstream of the water flow direction of the pressurizing water pump, and the expansion joint is arranged between the pressurizing water pump and the check valve so as to ensure that the check valve is closed when the pump is stopped in an accident.

Description

Technical Field

[0001] The utility model relates to an arrangement structure for preventing a water pump from bearing excessive radial water hammer pressure and is applicable to the field of pressurized water supply projects. Background Art

[0002] In recent years, with the introduction of the concept of national water network projects, more and more long-distance water diversion and regulation projects have been started. Many of these long-distance water supply projects require the use of water pumps to pressurize water. For pressurized water supply projects, water hammer protection design of the water transmission system is an important design content.

[0003] Usually, when designing water hammer protection for a water transmission system, more consideration is given to the installation of water hammer protection measures along the water transmission system and the maximum and minimum pressures generated at each typical location, while less consideration is given to the radial pressure along the pipeline.

[0004] Water pumps are typically installed and secured to prevent excessive vibration during operation. These pumps also have high tolerances to deformation and displacement. Excessive deformation can lead to unstable operation and reduced efficiency, or even serious flooding of pumping stations in some projects, with significant consequences. Currently, a common method to prevent radial pressure from causing deformation and displacement of water pumps is to further reinforce the pump piers. However, this method cannot fundamentally address the impact of excessive water hammer pressure on the water pump. Under long-term exposure to excessive water hammer pressure, the water pump still faces the risk of deformation and displacement. Utility Model Content

[0005] The technical problem to be solved by the present invention is: in view of the above-mentioned problems, a layout structure is provided to prevent a water pump from being subjected to excessive radial water hammer pressure.

[0006] The technical solution adopted by the utility model is: an arrangement structure for preventing a water pump from being subjected to excessive radial water hammer pressure, characterized in that a pressurized water pump, an expansion joint, a check valve and a stiffening ring are sequentially arranged on the pressure pipe along the direction of water flow, wherein the stiffening ring is sleeved on the pressure pipe and arranged in the anchor pier.

[0007] The stiffening rings are arranged in at least three rows.

[0008] The beneficial effects of the present utility model are as follows: An expansion joint and a check valve are sequentially provided downstream of the pressurized water pump in the direction of water flow. The expansion joint is disposed between the pressurized water pump and the check valve to ensure that the check valve is closed when the pump is shut down due to an accident. The radial displacement caused by the water hammer pressure generated by the closing of the check valve is borne by the check valve, related pipelines, and anchors. The radial displacement of the check valve and the steel pipe on the upstream side of the water flow is radially displaced by the expansion joint, thereby preventing the pressurized water pump from being subjected to excessive water hammer pressure and displacement. The utility model can prevent large radial displacement of the water pump with minimal engineering measures and investment, and is simple to construct and highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematic diagram of the structure of the embodiment.

[0010] 1. Pressure pipe; 2. Booster pump; 3. Expansion joint; 4. Check valve; 5. Anchor pier; 6. Stiffening ring. DETAILED DESCRIPTION

[0011] like Figure 1 As shown, this embodiment is a layout structure for preventing a water pump from being subjected to excessive radial water hammer pressure. The structure is arranged on a pressure pipe, and a pressurized water pump, an expansion joint, a check valve and a stiffening ring are arranged on the pressure pipe in sequence along the direction of water flow.

[0012] In this example, anchor blocks are installed in correspondence with the stiffening rings. These rings are mounted on the pressure pipe and positioned within the anchor blocks. The ring height is set at 1 / 10 the pipe diameter and no less than 15 cm. A minimum of three rings are typically required, with the final number determined based on the maximum radial pressure generated during an emergency pump shutdown. The anchor blocks ultimately bear the radial forces generated by friction between the stiffening rings and the contact surface between the steel pipe and the anchor blocks.

[0013] In this embodiment, the expansion joint is arranged between the pressurized water pump and the check valve to ensure that the check valve is closed when the pump is stopped due to an accident. The radial displacement caused by the water hammer pressure generated by the closing of the check valve is borne by the check valve, related pipelines and anchor piers. The radial displacement of the check valve and the steel pipe on the upstream side of the water flow is radially displaced by the expansion joint, thereby preventing the pressurized water pump from being subjected to excessive water hammer pressure and preventing it from being displaced.

[0014] The above embodiments are only used to illustrate the utility model concept of the present invention, and are not intended to limit the protection of the rights of the present invention. Any non-substantial changes to the present invention using this concept should fall within the scope of protection of the present invention.

Claims

1. An arrangement structure for preventing a water pump from being subjected to excessive radial water hammer pressure, characterized by: A pressure water pump, an expansion joint, a check valve and a stiffening ring are sequentially arranged on the pressure pipe along the water flow direction, wherein the stiffening ring is sleeved on the pressure pipe and arranged in the anchor pier.

2. The arrangement structure for preventing a water pump from being subjected to excessive radial water hammer pressure according to claim 1, characterized in that: The stiffening rings are arranged in at least three rows.

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