CN209781931U - Water feed pump inlet and outlet pipe connecting assembly for thermal power generating unit - Google Patents
Water feed pump inlet and outlet pipe connecting assembly for thermal power generating unit Download PDFInfo
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- CN209781931U CN209781931U CN201920179809.3U CN201920179809U CN209781931U CN 209781931 U CN209781931 U CN 209781931U CN 201920179809 U CN201920179809 U CN 201920179809U CN 209781931 U CN209781931 U CN 209781931U
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- feeding pump
- generating unit
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Abstract
the utility model relates to a water feeding pump inlet and outlet pipe connecting component for a thermal power generating unit, which is used for the fastening connection between a water feeding pump body pipe (6) and a conveying pipe (1), and comprises an annular groove, a retainer ring (4) and a flange external member, wherein the annular groove is provided with two circles in parallel at the pipe orifice of the water feeding pump body pipe; the retainer ring (4) comprises two rings of annular flanges (41) and a connecting plate (42) connected to the same sides of the two rings of annular flanges (41), and the annular flanges (41) are clamped in the annular grooves; the flange kit includes flange (5) and anti-flange (3), flange (5) activity cup joint on water-feeding pump body pipe mouth outer wall, the outer fringe upper surface butt of flange (5) in the lower surface of even board (42), anti-flange (3) fixed connection in conveyer pipe mouth of pipe, flange (5) and anti-flange (3) between fixed through bolt (2). Compared with the prior art, the utility model has the advantages of joint strength is high, conveniently install and remove.
Description
Technical Field
the utility model belongs to the technical field of the feed pump water pipe and the system piping connection and specifically relates to a water pump business turn over water pipe coupling assembling for thermal power generating unit.
Background
The feed pump is important auxiliary machinery equipment of the thermal power generating unit, and along with the continuous progress of the thermal power generating unit technology in China, the performance requirement of the feed pump is higher and higher. A performance test performed before the water-feeding pump leaves a factory is a key step for testing whether the performance of the water-feeding pump reaches the standard, when test data are lower than or higher than design values, the impeller needs to be processed, and meanwhile, the temperature, vibration and the like of a bearing when the water-feeding pump runs can be monitored. The water feeding pump, the water discharging pipe and the system pipeline are connected in an important test procedure, convenience in connection is guaranteed, sealing performance is guaranteed, convenience in groove machining of the water feeding pump and the water discharging pipe after the test is finished is considered, and the sealing performance, the dismounting convenience and the economical efficiency cannot be well considered simultaneously by the existing connection structure. Therefore, it is necessary to redesign the connection structure of the water inlet pipe and the water outlet pipe and the system pipeline during the factory test of the water feeding pump.
the existing connecting structure has the following defects: in the traditional flange connection, the convenience of assembly and disassembly is not enough, after the test is finished, flanges at the water inlet pipe and the water outlet pipe of the water feeding pump need to be removed by a boring machine, and the grooves of the water inlet pipe and the water outlet pipe are processed, so that the economical efficiency is poor; the water inlet pipe and the water outlet pipe are connected with the system pipeline in a groove welding mode, so that the requirement on the dimensional precision of the pipeline of the test bed is met, the system pipeline needs to be cut after the test is finished, and the material waste is serious; traditional individual layer staple bolt formula connection structure, joint strength is not enough, and when flow and pressure increase, the pipeline vibration that produces during the experiment probably makes the junction not hard up, causes sealed face to leak. If the connection strength needs to be improved, the thickness of the water pipe of the pump body needs to be thickened, and the depth of the outer circular groove needs to be enlarged, so that material waste is caused.
Disclosure of Invention
The utility model aims at providing a water feed pump business turn over water pipe coupling assembling for thermal power generating unit in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
A water feeding pump water inlet and outlet pipe connecting assembly for a thermal power generating unit is used for fastening and connecting a water feeding pump body pipe and a conveying pipe and comprises an annular groove, a clamping ring and a flange kit, wherein the annular groove is provided with two circles in parallel at a pipe opening of the water feeding pump body pipe; the connecting plate is connected to the outer sides of the two rings of annular flanges, and the flanges are clamped in the annular grooves; the flange kit includes flange and anti-flange, the flange activity cup joint on water-feeding pump body pipe mouth of pipe outer wall, the outer fringe upper surface butt of flange in the lower surface of even board, anti-flange fixed connection in conveyer pipe mouth of pipe, flange and anti-flange between pass through the bolt fastening.
Further, the vertical section of the clamping ring is C-shaped.
Further, the horizontal section of the annular flange is circular.
Further, the radius of the annular flange is the same as the radius of the groove bottom of the annular groove.
Furthermore, the clamping ring is spliced by two semicircular clamping rings to form the circular clamping ring.
Further, the collar is made of rigid metal materials.
Further, the inner diameter of the flange is larger than the outer diameter of the pipe orifice of the water supply pump body.
the utility model discloses an among the rand formula connection structure, have certain radial clearance between water-feeding pump body water pipe mouth of pipe and the flange, fixed cutting ferrule is transmitted by the flange to bolt fastening back pressure, transmits pump body water pipe and anti-flange for by fixed cutting ferrule transmission again, and wherein first contact surface and the second contact surface on the rand transmit the packing force simultaneously for end surface is laminated each other under water-feeding pump body water pipe up end and the anti-flange, reaches sealed effect.
Compared with the prior art, the clamping ring adopted in the utility model transmits the pressing force through two surfaces, and the sealing performance is good under the working conditions of high pressure and large flow; the connection strength is high; the assembly and disassembly are convenient; the clamping ring and the connecting bolt are used on the same type of water feeding pump for multiple times; after the test is finished, the water inlet pipe and the water outlet pipe of the water feeding pump do not need to be cut, the groove can be directly machined at the joint, the material waste is avoided, and the economy is improved.
Drawings
FIG. 1 is a schematic structural view of a water inlet and outlet pipe connecting component of a water feed pump for a medium-fire electric machine set;
Fig. 2 is a schematic cross-sectional structure view of the collar of the present invention;
Fig. 3 is another schematic cross-sectional structure diagram of the collar of the present invention.
In the figure: 1. conveying pipe, 2, bolt, 3, counter flange, 4, collar, 41, annular flange, 42, connecting plate, 43, third contact surface, 44, second contact surface, 45, first contact surface, 5, flange.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
A water inlet and outlet pipe connecting assembly of a water feeding pump for a thermal power unit is used for fastening and connecting a water feeding pump body pipe 6 and a conveying pipe 1 and comprises an annular groove, a clamping ring 4 and a flange sleeve.
an annular groove portion: two rings are arranged in parallel at the pipe orifice of the water feeding pump body;
the clamping ring 4 part: comprises two rings of annular flanges 41 and a connecting plate 42 connected to the same side of the two rings of annular flanges 41, and the annular flanges are clamped in the annular grooves, as shown in figures 2 and 3; the horizontal section of the annular flange 41 is circular. The curvature radius of the circular ring shape is the same as the radius corresponding to the groove bottom of the annular groove, the circular clamping ring is spliced by two semicircular clamping rings, and the clamping rings are made of rigid metal materials.
The flange kit part: the water supply pump body pipe orifice fixing structure comprises a flange 5 and an inverse flange 3, and is characterized in that the flange 5 is movably sleeved on the outer wall of a pipe orifice of a water supply pump body pipe, the upper surface of the outer edge of the flange 5 abuts against the lower surface of a connecting plate 42, the inverse flange 3 is fixedly connected to the pipe orifice of a conveying pipe, and the flange 5 and the inverse flange 3 are fixed through bolts 2. The inner diameter of the flange 5 is larger than the outer diameter of the pipe orifice of the water supply pump body.
In the specific use process, firstly, the two semicircular clamping rings 4 are clamped in the annular groove to form an integral annular clamping ring 4, a certain radial gap is formed between the pipe orifice of the water pipe of the water supply pump body and the flange 5, referring to fig. 1 and fig. 2, after the bolt 2 is fixed, the pressure is transmitted to the clamping ring 4 by the flange and then transmitted to the water pipe of the pump body and the counter flange by the clamping ring 4, wherein the upper surface of the upper flange of the flange 5 is pressed against a third contact surface 43 on the clamping ring 4, the third contact surface transmits the pressing force to a second contact surface 44 and a first contact surface 45 through a connecting plate 42, so that the first contact surface 45 and the second contact surface 44 are pressed against the inner wall of the annular groove, further, the upper end surface of the water pipe of the water supply pump body and the lower end surface of the counter flange are mutually attached, and. And when the water feeding pump is used, the bolt 2 is only needed to be disassembled, and the clamping ring 4 is disassembled to realize quick disassembling operation, so that the water feeding pump and the water discharging pipe are prevented from being cut.
The basic principles and the main features of the present invention and the advantages of the present invention have been shown and described above, and it is only the principle of the present invention that the skilled person in the pump industry should understand, the present invention is not limited by the above implementation, the above implementation and the description described in the specification, without departing from the spirit and scope of the present invention, the present invention can also have various changes and improvements, and these changes and improvements all fall into the scope of the claimed invention.
Claims (6)
1. The utility model provides a water feed pump business turn over water pipe coupling assembling for thermal power generating unit for fastening connection between this siphunculus of water feed pump (6) and conveyer pipe (1), its characterized in that includes:
An annular groove: two rings are arranged in parallel at the pipe orifice of the water feeding pump body;
Collar (4): the clamping device comprises two rings of annular flanges (41) and a connecting plate (42) connected to the outer sides of the two rings of annular flanges (41), wherein the annular flanges (41) are clamped in the annular grooves;
A flange kit: including flange (5) and anti-flange (3), flange (5) activity cup joint on water-feeding pump body pipe mouth outer wall, the outer fringe upper surface butt of flange (5) in the lower surface of even board (42), anti-flange (3) fixed connection in the conveyer pipe mouth of pipe, flange (5) and anti-flange (3) between fixed through bolt (2).
2. The water feeding pump water inlet and outlet pipe connecting assembly for the thermal power generating unit as claimed in claim 1, wherein the vertical section of the collar (4) is C-shaped.
3. the water feeding pump water inlet and outlet pipe connecting assembly for the thermal power generating unit as claimed in claim 1, wherein the horizontal section of the annular flange (41) is circular.
4. The water feed pump inlet and outlet pipe connection assembly for the thermal power generating unit as claimed in claim 3, wherein the radius of the annular flange (41) is the same as the radius corresponding to the groove bottom of the annular groove.
5. The water feeding pump water inlet and outlet pipe connecting assembly for the thermal power generating unit as claimed in claim 1, wherein the collar (4) is made of a rigid metal material.
6. The water feeding pump water inlet and outlet pipe connecting assembly for the thermal power generating unit as claimed in claim 1, wherein the inner diameter of the flange (5) is larger than the outer diameter of the pipe orifice of the water feeding pump body pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179809.3U CN209781931U (en) | 2019-01-31 | 2019-01-31 | Water feed pump inlet and outlet pipe connecting assembly for thermal power generating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920179809.3U CN209781931U (en) | 2019-01-31 | 2019-01-31 | Water feed pump inlet and outlet pipe connecting assembly for thermal power generating unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209781931U true CN209781931U (en) | 2019-12-13 |
Family
ID=68794526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920179809.3U Active CN209781931U (en) | 2019-01-31 | 2019-01-31 | Water feed pump inlet and outlet pipe connecting assembly for thermal power generating unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209781931U (en) |
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2019
- 2019-01-31 CN CN201920179809.3U patent/CN209781931U/en active Active
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