CN206268136U - A kind of centrifugal multistage pump multiple centrifugal pump uses cooling supply mains - Google Patents

Abstract

Cooling supply mains is used the utility model discloses a kind of centrifugal multistage pump multiple centrifugal pump, including being respectively arranged water inlet manifold and outfall sewer in pump both sides, it is connected with cooled part respectively by branch pipe between water inlet manifold and outfall sewer, described water inlet manifold and the drilling for opening up respective numbers on outfall sewer all in accordance with corresponding branch pipe direction, drilling is provided with corresponding branch pipe connecting piece, branch pipe connecting piece lower end is designed to the arcs of recesses matched with the residing tube wall of corresponding drilling, and be fixed in corresponding drilling by welded seal, branch pipe connecting piece upper end is provided with branch pipe pipe joint.Because house steward is that integral tube, a joint are directly welded in main pipe, non-threaded connection greatly reduces the risk of pump main pipe pipeline leak, improves multistage pump and uses reliability；The turnover supply mains of every pump can save N number of three-way connection, while because cooling water pressure is relatively low, without processing connection screw thread, it is possible to decrease the pipe thickness of house steward.

Description

A kind of centrifugal multistage pump multiple centrifugal pump uses cooling supply mains

Technical field

The utility model is related to pump cooling water pipe, and cooling supply mains is used more specifically to a kind of centrifugal multistage pump multiple centrifugal pump.

Background technology

The usual drive end (DE) and anti-drive end (NDE) in pump of centrifugal multistage pump multiple centrifugal pump is to pump bearing cooling chamber, mechanical seal Chamber, cooling separate space connect cooling water and are cooled down.Generally water inlet manifold 1 is respectively arranged in the side of pump two and outfall sewer 2 (is referred to as cooling Supply mains), branch pipe connection 3 is matched somebody with somebody on cooling supply mains, connect branch pipe 4 and be respectively connected to pump bearing cooling chamber, mechanical seal chamber, cooling The inlet opening of separate space and apopore, as shown in Figure 1.

House steward is sawn into several sections by length incorporated by reference to shown in Fig. 2~Fig. 4, generally using at present, company is attacked at every section of two ends Screw thread is connect, every house steward is picked up with six one section of three-way pipes 5 one section come while to adjust each mouth of pipe direction, pipe tail end is used Screw thread silently 6 is sealed, and pressure test is carried out after then sealing mouth of pipe.It is such as qualified, then house steward is twisted with being fixed on pump frame Upper branch pipe connection 3 and branch pipe pipeline.There is following defect using aforesaid way：1) workload for making house steward is larger；2) Nipple quantity is more, although by pressure test, risk of leakage is larger, and 3) screw thread is tightened because branch pipe rotates around house steward, and Required during each mouth of pipe direction, screw thread tightens position and is not necessarily branch pipe and needs direction, it is difficult to unanimously, sometimes must not Some tube angulation of asking for an advance on one's pay, 4 should not be unscrewed) at the same during pipeline installation, pump lifting etc., because nipple quantity is too many, one Denier produces leakage at certain nipple, because of branch pipe direction it has been determined that there is multiple branch pipes on house steward, tightens one of spiral shell Line, must have another head thread to unclamp, it is impossible to be stopped a leak by tightening screw thread again, thus assembling after or pump cannot be disappeared using scene Except the issuable leakage in house steward threaded connection place.

Utility model content

For disadvantages mentioned above present in prior art, the purpose of this utility model is to provide a kind of centrifugal multistage pump multiple centrifugal pump with cold But supply mains, it is simple structure, easy to make, can standardized production, quality is more stable.

To achieve the above object, the utility model is adopted the following technical scheme that：

The centrifugal multistage pump multiple centrifugal pump uses cooling supply mains, including is respectively arranged water inlet manifold and outfall sewer in pump both sides, enters It is connected with cooled part respectively by branch pipe between supply mains and outfall sewer, on described water inlet manifold and outfall sewer The drilling of respective numbers is opened up all in accordance with corresponding branch pipe direction, drilling is provided with corresponding branch pipe connecting piece, branch pipe connecting piece Lower end is designed to the arcs of recesses matched with the residing tube wall of corresponding drilling, and is fixed in corresponding drilling by welded seal, Branch pipe connecting piece upper end is provided with branch pipe pipe joint.

Described water inlet manifold is sealed with the tail end of outfall sewer by welding pipe cap.

Described water inlet manifold is separately fixed on pump frame with outfall sewer.

Described water inlet manifold and/or outfall sewer use stainless steel material.

In the above-mentioned technical solutions, centrifugal multistage pump multiple centrifugal pump cooling supply mains of the present utility model has following advantage：

1) because house steward is that integral tube, a joint are directly welded in main pipe, non-threaded connection greatly reduces pump main pipe pipe The risk of road leak, improves multistage pump and uses reliability；

2) the turnover supply mains of every pump can save N number of three-way connection, while because cooling water pressure is relatively low, without processing Connection screw thread, it is possible to decrease the pipe thickness of house steward；

3) because saving cutting main pipe, tapping, comprehensively get off, the making Inlet and outlet water main pipe time can be saved, pressed from both sides using special Tool and welding equipment, can standardized production, time-consuming more considerable, quality is more stable；

4) it is more more attractive than conventional tube because without three-way connection, stainless steel can be used, aesthetic property is more preferable.

Brief description of the drawings

Fig. 1 is the scheme of installation of the cooling supply mains of prior art；

Fig. 2 is the structural representation for (enter) supply mains of prior art；

Fig. 3 is A portions enlarged diagram in Fig. 2；

Fig. 4 is the house steward's tail end enlarged diagram in Fig. 2；

Fig. 5 is the structural representation of cooling supply mains of the present utility model；

Fig. 6 is the scheme of installation of branch pipe connecting piece of the present utility model；

Fig. 7 is house steward's tail end enlarged diagram of the present utility model.

Specific embodiment

The technical solution of the utility model is further illustrated with reference to the accompanying drawings and examples.

Refer to shown in Fig. 5~Fig. 7, centrifugal multistage pump multiple centrifugal pump of the present utility model is same as the prior art with cooling supply mains It is equally also to include being respectively arranged the water inlet manifold 1 and outfall sewer 2 in pump both sides, between water inlet manifold 1 and outfall sewer 2 It is connected with cooled part respectively by branch pipe, except that：On described water inlet manifold 1 and outfall sewer 2 all in accordance with Corresponding branch pipe direction opens up the drilling 7 of respective numbers, and drilling 7 is provided with corresponding branch pipe connecting piece 3, and branch pipe connecting piece 3 can Using standard branch pipe connecting piece, lower end is designed to the arcs of recesses matched with tube wall residing for corresponding drilling 7, and close by welding 8 Sealing is scheduled in corresponding drilling 7, and the upper end of branch pipe connecting piece 3 is provided with branch pipe pipe joint 9, is connected by with branch pipe, so as to constitute The structure that house steward is connected with branch pipe.

Used as one embodiment, described water inlet manifold 1 is carried out close with the tail end of outfall sewer 2 by 8 pipe caps 10 of welding Envelope.

Used as one embodiment, described water inlet manifold 1 is separately fixed on pump frame with outfall sewer 2.

Used as one embodiment, described water inlet manifold 1 and/or outfall sewer 2 use stainless steel material, and aesthetic property is more It is good.

It should be noted that water inlet manifold of the present utility model 1 and outfall sewer 2 are after branch pipe connecting piece 3 is installed, need 3 mouthfuls of each branch pipe connecting piece is sealed with closure nut, then flange port is sealed with vexed plate, pressure test, pressure examination are carried out on request Test qualified, then water inlet manifold 1 and outfall sewer 2 are fixed on pump frame, and connect branch pipe pipeline.

Using centrifugal multistage pump multiple centrifugal pump of the present utility model with cooling supply mains, with advantages below：

1) because house steward is that integral tube, a joint are directly welded in main pipe, non-threaded connection greatly reduces pump main pipe pipe The risk of road leak, improves multistage pump and uses reliability；

2) the turnover supply mains 2 of every pump can save N number of three-way connection, while because cooling water pressure is relatively low, without adding Work connection screw thread, it is possible to decrease the pipe thickness of house steward；

3) because saving cutting main pipe, tapping, comprehensively get off, the making Inlet and outlet water main pipe time can be saved, pressed from both sides using special Tool and welding equipment, can standardized production, time-consuming more considerable, quality is more stable；

4) it is more more attractive than conventional tube because without three-way connection, stainless steel can be used, aesthetic property is more preferable.

Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate that this practicality is new Type, and be not used as be to restriction of the present utility model, if in spirit of the present utility model, to the above Change, the modification of embodiment will all fall in Claims scope of the present utility model.

Claims (4)

1. a kind of centrifugal multistage pump multiple centrifugal pump uses cooling supply mains, including is respectively arranged water inlet manifold and outfall sewer in pump both sides, enters It is connected with cooled part respectively by branch pipe between supply mains and outfall sewer, it is characterised in that：Described water inlet manifold With the drilling for opening up respective numbers on outfall sewer all in accordance with corresponding branch pipe direction, drilling is provided with the connection of corresponding branch pipe Part, branch pipe connecting piece lower end is designed to the arcs of recesses matched with the residing tube wall of corresponding drilling, and is fixed on by welded seal In corresponding drilling, branch pipe connecting piece upper end is provided with branch pipe pipe joint.

2. centrifugal multistage pump multiple centrifugal pump as described in claim 1 uses cooling supply mains, it is characterised in that：

Described water inlet manifold is sealed with the tail end of outfall sewer by welding pipe cap.

3. centrifugal multistage pump multiple centrifugal pump as described in claim 1 uses cooling supply mains, it is characterised in that：

Described water inlet manifold is separately fixed on pump frame with outfall sewer.

4. centrifugal multistage pump multiple centrifugal pump as described in claim 1 uses cooling supply mains, it is characterised in that：

Described water inlet manifold and/or outfall sewer use stainless steel material.