CN201526448U

CN201526448U - Cryogenic pump sump

Info

Publication number: CN201526448U
Application number: CN2009202323416U
Authority: CN
Inventors: 叶勇; 陈来生; 魏义平
Original assignee: Shenghui Gas & Chemical Systems (zhangjiagang) Co Ltd
Current assignee: CSSC SHENGHUI EQUIPMENT CO., LTD.
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-07-14
Anticipated expiration: 2019-09-28

Abstract

The utility model discloses a cryogenic pump sump comprising a pump sump body, a liquid inlet pipe installed on the pump sump body, a pump sump cover fixed at the top part of the pump sump body and a liquid outlet pipe installed on the pump sump cover, wherein the exterior of the liquid outlet pipe is wrapped with a heat insulating layer, a thermal insulating layer is fixed under the pump sump cover, the liquid outlet pipe penetrates through the pump sump cover and the thermal insulating layer to extend into the interior of the pump sump body, and an outlet flange is fixed at the bottom of the liquid outlet pipe. The utility model relates to the pump sump for installing the cryogenic pump.

Description

A kind of cryopump pond

Technical field

The utility model belongs to the low-temperature pressure container technical field, refers more particularly to cryopump pool technology field.

Background technique

Be used to transmit the impossible thermal insulation of centrifugal pump of cryogenic liquide itself, be in low-temperature condition when moving for guaranteeing cryopump, conventional way is that cryopump is installed in the pressurized container of a thermal insulation, and this pressurized container is commonly called as the cryopump pond.As shown in Figure 2, traditional cryopump pond comprises pump pond body 1, be installed on the liquid inlet pipe 2 on the pump pond body 1, be fixed in the pump pond lid 3 at body 1 top, pump pond, on the pump pond lid 3 through hole 4 is arranged, through hole 4 tops of pump pond lid 3 are equipped with upper flange 5, through hole 4 belows of pump pond lid 3 are equipped with lower flange 6, the upper flange hole, the lower flange hole is connected with the through hole 4 of pump pond lid 3, drain pipe 7 is fixed in the top of pump pond lid 3 by upper flange 5, the external packets of drain pipe is wrapped with heat insulation layer 8, cryogenic liquid pump is hung on the below of pump pond lid 3 by lower flange 6, the through hole 4 that cryogenic liquide covers 3 middle parts through the pump pond enters drain pipe 7 and flows out then, the deficiency of its existence is that pump pond lid 3 directly contacts with the gas phase of cryogenic liquide, there is direct transmission of heat, the top of pump pond body 1 can not be adiabatic, when cryogenic liquide is flowed through the through hole 4 of pump pond lid 3, a large amount of heats can be delivered to the cryogenic liquide the inside, cause the cryogenic liquide saturation pressure to rise, evaporation loss strengthens, simultaneously, a large amount of frostings can appear in pump pond lid 3, can make the cryopump can not normal starting when serious.

The model utility content

Technical problem to be solved in the utility model is: a kind of cryopump pond that does not exist pump Chi Gai to leak heat problem will be provided.

For addressing the above problem, the technical solution adopted in the utility model is: a kind of cryopump pond, comprise pump pond body, be installed on liquid inlet pipe on the body of pump pond, be fixed in body top, pump pond pump Chi Gai, be installed on the drain pipe that the pump pond covers, lid below, described pump pond is fixed with thermal-protective coating, drain pipe penetrates pump Chi Gai and thermal-protective coating, stretch into body inside, pump pond, the bottom of drain pipe is fixed with outlet(discharge) flange, and described drain pipe external packets is wrapped with heat insulation layer.

Described thermal-protective coating is the polyethylene thermal insulating material.

Described drain pipe and pump Chi Gai welding are fixing.

The beneficial effects of the utility model are: a kind of cryopump of the utility model pond, the drain pipe that external packets is wrapped with heat insulation layer directly penetrates pump Chi Gai, stretch into body inside, pump pond, cryogenic liquide directly flows out through the drain pipe that runs through pump Chi Gai, fundamentally having completely cut off cryogenic liquide contacts and heat exchange with the direct of pump Chi Gai, because low, the anti-water vapor permeable ability of polyethylene thermal insulating material thermal conductivity is strong, insulation effect good, effectively completely cut off cryogenic liquide and pump pond lid lower surface and contacted, thereby reduced the leakage heat problem of pump Chi Gai.

Description of drawings

Fig. 1 is the structural representation in a kind of cryopump of the utility model pond;

Fig. 2 is the structural representation in the cryopump pond described in the background technique.

Among Fig. 1: 1, pump pond body, 2, liquid inlet pipe, 3, pump Chi Gai, 4, drain pipe, 5, outlet(discharge) flange, 6, the polyethylene thermal insulating material, 7, heat insulation layer.

Among Fig. 2: 1, pump pond body, 2, liquid inlet pipe, 3, pump Chi Gai, 4, through hole, 5, upper flange, 6, lower flange, 7, drain pipe, 8, heat insulation layer.

Embodiment

Below in conjunction with accompanying drawing, the structure in a kind of cryopump of the utility model pond is described in further detail.

As shown in Figure 1, a kind of cryopump pond, comprise pump pond body 1, be installed on liquid inlet pipe 2 on the pump pond body 1, by screw bolt and nut be fixed in body 1 top, pump pond pump pond lid 3, be fixedly welded on the drain pipe 4 on the pump pond lid 3, the below of pump Chi Gai is fixed with polyethylene thermal insulating material 6, the drain pipe 4 that external packets is wrapped with heat insulation layer 7 penetrates pump pond lid 3 and polyethylene thermal insulating material 6, stretch into body 1 inside, pump pond, the bottom of drain pipe 4 is fixed with outlet(discharge) flange 5, and cryogenic liquid pump is hung on the drain pipe 4 that stretches into body 1 inside, pump pond by outlet(discharge) flange 5.

From the above, the beneficial effect in a kind of cryopump of the utility model pond is: the drain pipe 4 that external packets is wrapped with heat insulation layer 7 directly penetrates pump pond lid 3 and polyethylene thermal insulating material 6, stretch into the inside of pump pond body 1, cryogenic liquide directly flows out by drain pipe 4 when cryopump comes out, fundamentally completely cut off direct contact and heat exchange of cryogenic liquide with pump pond lid 3, because the thermal conductivity of polyethylene thermal insulating material 6 is low, anti-water vapor permeable ability is strong, insulation effect is good, completely cut off cryogenic liquide effectively and covered 3 lower surfaces with the pump pond and contact, thereby reduced the leakage heat problem of pump pond lid 3.

Claims

1. cryopump pond, comprise pump pond body, be installed on liquid inlet pipe on the body of pump pond, be fixed in body top, pump pond pump Chi Gai, be installed on the drain pipe that the pump pond covers, the drain pipe external packets is wrapped with heat insulation layer, it is characterized in that: lid below, described pump pond is fixed with thermal-protective coating, drain pipe penetrates pump Chi Gai and thermal-protective coating, stretch into body inside, pump pond, the bottom of drain pipe is fixed with outlet(discharge) flange.

2. cryopump according to claim 1 pond is characterized in that described thermal-protective coating is the polyethylene thermal insulating material.

3. cryopump according to claim 1 and 2 pond is characterized in that described drain pipe and pump Chi Gai welding is fixing.