CN-122014673-A - Shielding pump set for special environment

CN122014673ACN 122014673 ACN122014673 ACN 122014673ACN-122014673-A

Abstract

The application discloses a shielding pump set for special environments, which relates to the technical field of shielding pumps and comprises an outer cylinder, wherein a base is detachably arranged on the outer cylinder, a pump body is arranged on the bottom wall of the base, an inlet pipe is arranged on the side wall of the outer cylinder, a liquid suction port is formed at the bottom of the pump body, an outlet pipe is arranged on the outer side wall of the outer cylinder, a liquid outlet pipe is arranged on the pump body, the end part of the liquid outlet pipe is connected with the outlet pipe, the middle part of the bottom wall of the inner cavity of the outer cylinder is upwards raised, the bottom wall of the inner cavity of the outer cylinder is gradually lowered from a central point to the direction of the inner wall of the cylinder, a first guide part is formed, and a liquid discharge pipe is arranged in the outer cylinder. According to the application, the stand is detached from the outer cylinder, the stand drives the pump body to move out of the outer cylinder, and the radioactive liquid in the outer cylinder is extracted through the liquid discharge pipe, so that the radioactive liquid flows to the inner side wall of the outer cylinder under the action of the first guide part when the residual amount of the radioactive liquid is small, and the liquid discharge pipe can extract the radioactive liquid retained in the outer cylinder conveniently.

Inventors

LU JINQI
LI QIAN
ZHENG HAIXIA
YANG FEILI
ZHOU HAI
ZHU HONG
LIU GUWEI

Assignees

上海阿波罗机械股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260313

Claims (6)

1. A shielding pump set for special environments is characterized by comprising an outer cylinder body (1), wherein a base (2) is detachably arranged on the outer cylinder body (1), a pump body (8) is arranged on the bottom wall of the base (2), an inlet pipe (3) is arranged on the side wall of the outer cylinder body (1), a liquid suction port (4) is formed in the bottom of the pump body (8), an outlet pipe (5) is arranged on the outer side wall of the outer cylinder body (1), a liquid outlet pipe (6) is arranged on the pump body (8), the end part of the liquid outlet pipe (6) is connected with the outlet pipe (5), the middle part of the bottom wall of an inner cavity of the outer cylinder body (1) is upwards protruded, the bottom wall of the inner cavity of the outer cylinder body (1) is gradually lowered from a central point to the direction of the inner wall of the cylinder and is provided with a first guide part (7), a liquid discharge pipe (9) is arranged in the outer cylinder body (1), and the bottom end of the liquid discharge pipe (9) is positioned at the bottom of the inner side wall of the outer cylinder body (1).
2. The shielding pump set for special environments according to claim 1, wherein the drainage groove (13) is formed in the bottom wall of the inner cavity of the outer cylinder body (1) along the circumferential direction of the outer cylinder body, the height of the bottom wall of the inner cavity of the outer cylinder body (1) is gradually reduced from the inner wall of the cylinder to the central point direction, the second guide part (14) is formed, the drainage groove (13) is located between the first guide part (7) and the second guide part (14), the drainage pipe (9) comprises a fixed pipe body (91), a floating pipe body (92) and a corrugated connecting pipe body (93), the fixed pipe body (91) is fixedly arranged in the outer cylinder body (1), the top end of the corrugated connecting pipe body (93) is fixedly arranged at the bottom end of the fixed pipe body (91), the bottom end of the corrugated connecting pipe body (93) is fixedly connected with the top end of the floating pipe body (92), the floating block (20) is arranged on the floating pipe body (92), the bottom end of the floating pipe body (92) is located right above the first guide part (7) and the second guide part (14), the bottom end of the floating pipe body (92) is in contact with the bottom wall (15) of the drainage groove (15), and the bottom end of the floating pipe body (92) is provided with the inner diameter of the floating pipe body (15).
3. A shielding pump set for special environments according to claim 2, wherein a plurality of guide rods (16) are fixedly arranged on the top wall of the floating pipe body (92), a plurality of guide grooves (17) are formed in the bottom wall of the fixed pipe body (91), and the guide rods (16) are respectively arranged in the guide grooves (17) in a sliding mode.
4. The shielding pump set for special environments according to claim 2, wherein the outer cylinder body (1) is located on the bottom wall of the liquid discharge groove (13) and fixedly provided with a guide pipe (18) along the axis direction of the outer cylinder body, the guide pipe (18) is provided with a check ring (19) in a sliding mode, the floating block (20) is arranged on the check ring (19), the floating pipe body (92) is fixedly provided with the check ring (19) in a penetrating mode, the check ring (19) is used for movably blocking the liquid discharge groove (13), the guide pipe (18) is internally provided with an air inlet channel (21), the top end of the air inlet channel (21) is communicated with the inner cavity of the outer cylinder body (1), and the bottom end of the air inlet channel (21) is communicated with the liquid discharge groove (13).
5. A shielding pump set for special environments according to claim 4, wherein the floating pipe body (92) and the guide pipe (18) are located on two symmetrical sides of the retainer ring (19) along the circumferential direction of the outer cylinder body (1), the floating blocks (20) are arranged in an arc shape, two floating blocks (20) are arranged, and two floating blocks (20) are symmetrically arranged on the retainer ring (19).
6. A shielding pump set for special environments according to claim 5, wherein two air outlets (22) are formed at the bottom end of the air inlet channel (21), the air outlet directions of the two air outlets (22) are opposite along the tangential direction of the liquid discharge groove (13), and a plurality of liquid discharge ports (15) are arranged at intervals along the circumferential direction of the floating pipe body (92).

Description

Shielding pump set for special environment Technical Field The application relates to the technical field of shielding pumps, in particular to a shielding pump set for special environments. Background In the special radiation environment of radioactive substance treatment, extremely high requirements are put on the protection performance and the operation stability of power transmission equipment, so that a specially designed shielding pump set is needed. The shielding pump set performs special structural optimization and protection design aiming at the radiation environment, can effectively resist radiation interference, ensures the stability of equipment, has long-term stable and reliable running state, and is an important foundation for ensuring the safety of the whole system and building a firm radioactive substance leakage prevention line. During long-term operation, the shield pump set inevitably requires planned maintenance, troubleshooting, or component replacement. When the shielding pump set needs to be disassembled, a remarkable and dangerous technical problem is exposed, namely, although the inlet and outlet valves are closed after the pump is stopped, a certain amount of radioactive liquid still remains in the pump shell cavity, the impeller runner and other low dead angles, so that the life and health of maintenance personnel are easily influenced. Disclosure of Invention In order to solve the problem that radioactive liquid is retained in a pump body during disassembly of a shielding pump set, the application provides the shielding pump set for special environments. The application provides a shielding pump set for a special environment, which adopts the following technical scheme: The utility model provides a shielding pump package for special environment, includes outer barrel, can dismantle on the outer barrel and be provided with the frame, be provided with the pump body on the frame diapire, be provided with the inlet tube on the lateral wall of outer barrel, the bottom of the pump body is formed with the liquid suction mouth, be provided with the outlet pipe on the lateral wall of outer barrel, be provided with the drain pipe on the pump body, the tip and the outlet connection of drain pipe, the inner chamber diapire middle part of urceolus upwards arch, the inner chamber diapire height of urceolus reduces gradually and is formed with first guiding part by the central point to the inner wall direction of a barrel, be provided with the fluid-discharge tube in the urceolus, the bottom of fluid-discharge tube is located the bottom of the inner lateral wall of urceolus. Through adopting above-mentioned technical scheme, in the radioactive liquid got into the urceolus from the inlet tube, the pump body is sent into the outlet tube with radioactive liquid from the drain pipe through the imbibition mouth in to carry radioactive liquid, when need disassemble shielding pump package, dismantle the frame from outer barrel and take off, the frame drives the pump body and moves out outer barrel, extract radioactive liquid in the urceolus through the fluid-discharge tube, when radioactive liquid surplus is less, under the effect of first guide part, radioactive liquid flows to the inside wall department of outer barrel, thereby the fluid-discharge tube of being convenient for can extract the radioactive liquid of being detained in the urceolus. Preferably, the liquid draining groove is formed in the bottom wall of the inner cavity of the outer cylinder along the circumferential direction of the bottom wall, the height of the bottom wall of the inner cavity of the outer cylinder is gradually reduced from the inner wall of the cylinder to the direction of the central point and is provided with a second guiding part, the liquid draining groove is positioned between the first guiding part and the second guiding part, the liquid draining pipe comprises a fixed pipe body, a floating pipe body and a corrugated connecting pipe body, the fixed pipe body is fixedly arranged in the outer cylinder, the top end of the corrugated connecting pipe body is fixedly arranged at the bottom end of the fixed pipe body, the bottom end of the corrugated connecting pipe body is fixedly connected with the top end of the floating pipe body, a floating block is arranged on the floating pipe body, the floating pipe body is positioned right above the liquid draining groove, the bottom end of the floating pipe body is movably connected with the bottom wall of the liquid draining groove, the bottom end of the side wall of the floating pipe body is provided with a liquid draining port, and the inner diameter of the liquid draining port is smaller than the inner diameter of the floating pipe body. Through adopting above-mentioned technical scheme, when the radioactive liquid in the urceolus remains more, radioactive liquid passes through the kicking block and drives the floating body and rise and remove, the bottom of floating body i