CN216767792U

CN216767792U - LDTN condensate pump seals water saving fixtures

Info

Publication number: CN216767792U
Application number: CN202122539406.5U
Authority: CN
Inventors: 温宇馨; 陈华; 胡小云
Original assignee: Guizhou Dafang Power Generation Co ltd
Current assignee: Guizhou Dafang Power Generation Co ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-06-17
Anticipated expiration: 2031-10-21

Abstract

The utility model discloses a sealed water-saving device of an LDTN (Low Density twisted nematic) condensate pump, which comprises a main body assembly and a water-saving assembly, wherein the main body assembly comprises a condensate pump, a filtering piece and a sealed water return main pipe; the water-saving assembly comprises a recovery water tank, and the recovery water tank is connected with a sealed water return main pipe at the bottom of the condensate pump. When the contact type closed water ring is sleeved on the outer side of the condensate pump, the sealing rubber strip and the condensate pump spindle form contact type sealing through the clamping groove, the anti-splashing effect of sealing water is consolidated, and the anti-splashing device is simple in structure and flexible to disassemble.

Description

LDTN condensate pump seals water saving fixtures

Technical Field

The utility model relates to the technical field of water saving of thermal power plants, in particular to a sealed water-saving device of an LDTN condensate pump.

Background

The LDTN series condensate pump adopts the water ring sealing process, and in the operation practice, the problem of overflow waste of sealing water is inevitable.

The shaft seal of the LDTN series condensate pump adopts M7N/43-G9 mechanical seal, and because the mechanical seal is a single-end-face sealed mechanical seal, the defects of reduced vacuum of a unit, unqualified oxygen content of condensate water and the like caused by improper adjustment of the pressure of seal water often occur in the actual operation process, the maximum value reaches 300ug/L, and exceeds the standard 30ug/L by nearly 10 times, and the safety and the economy of the unit operation are seriously influenced. According to the device, a contact type water seal ring is additionally arranged outside a mechanical seal of the condensate pump, the work of transformation and the like of a seal water recovery system is increased, the recovery and the reutilization of working media are effectively realized, and the safety and the economical efficiency of unit operation are improved.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.

The utility model is provided in view of the above and/or the problems existing in the existing LDTN condensate pump sealing water-saving device.

Therefore, the utility model aims to solve the problems of poor sealing performance of the condensate pump and overflow waste of sealing water.

In order to solve the technical problems, the utility model provides the following technical scheme: a sealed water-saving device of an LDTN condensate pump comprises a main body assembly and a water-saving assembly, wherein the main body assembly comprises the condensate pump, a filtering piece and a sealed water return main pipe, the water outlet of the condensate pump is provided with the filtering piece, and the condensate pump is connected with the filtering piece through the sealed water return main pipe; the water-saving assembly comprises a recovery water tank, and the recovery water tank is connected with a sealed water return main pipe at the bottom of the condensate pump.

As a preferred scheme of the LDTN condensate pump sealing water-saving device of the utility model, wherein: the condensate pump comprises a first condensate pump and a second condensate pump, and the top of the first condensate pump is connected with the top of the second condensate pump through a main pipe.

As a preferred scheme of the LDTN condensate pump sealing water-saving device of the utility model, wherein: the filter piece comprises a first filter piece and a second filter piece, the first filter piece is connected to the bottom of the first condensate pump, and the second filter piece is connected to the bottom of the second condensate pump.

As a preferred scheme of the LDTN condensate pump sealing water-saving device of the utility model, wherein: the water treatment device is characterized in that a first water flow pipe is arranged on one side of the first condensate pump, the other end of the first water flow pipe is arranged at a drainage box, a second water flow pipe is arranged on one side of the second condensate pump, the other end of the second water flow pipe is arranged at the drainage box, a third water flow pipe is further arranged on one side of the first condensate pump, a fourth water flow pipe is further arranged on one side of the second condensate pump, and the third water flow pipe and the fourth water flow pipe are at a collection point A.

As a preferred scheme of the LDTN condensate pump sealing water-saving device of the utility model, wherein: and the collection point B is arranged in the middle of the third water flow pipe, and the sealed water return main pipe on the other side of the recovery water tank and the third water flow pipe are connected at the collection point B.

As a preferred scheme of the LDTN condensate pump sealing water-saving device of the utility model, wherein: the sealed water return main pipe that recovery water tank one side set up is connected with the sealed water return main pipe of connecting in first filtration piece bottom, the sealed water return main pipe that recovery water tank opposite side set up is connected with the sealed water return main pipe of connecting in the second filtration piece bottom.

As a preferred scheme of the LDTN condensate pump sealing water-saving device, the LDTN condensate pump sealing water-saving device comprises the following steps: and a contact type water seal ring is sleeved on the outer side of the condensate pump.

As a preferred scheme of the LDTN condensate pump sealing water-saving device of the utility model, wherein: the top of the contact type water seal ring is provided with a sealing rubber strip clamping groove, and the middle of the contact type water seal ring is provided with a water retaining ring.

As a preferred scheme of the LDTN condensate pump sealing water-saving device of the utility model, wherein: the bottom of the contact type water seal ring is also provided with a base, and the base is connected with the condensate pump through a bolt.

The utility model has the beneficial effects that: when the contact type closed water ring is sleeved on the outer side of the condensate pump, the sealing rubber strip and the condensate pump spindle form contact type sealing through the clamping groove, the anti-splashing effect of sealing water is consolidated, and the anti-splashing device is simple in structure and flexible to disassemble.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is an overall structural diagram according to an embodiment of the present invention.

Fig. 2 is a diagram illustrating a relationship between a recovery water tank and a condensate pump according to an embodiment of the present invention.

Fig. 3 is a diagram illustrating a relationship between a condensate pump and a water seal ring according to an embodiment of the present invention.

Fig. 4 is a cross-sectional structural view of a water seal ring according to an embodiment of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1 to 2, a first embodiment of the present invention provides a sealed water saving device for an LDTN condensate pump, which includes a main body assembly 100 and a water saving assembly 200, wherein the main body assembly 100 includes a condensate pump 101, a filter 102 and a sealed water return main pipe 103, the filter 102 is disposed at a water outlet of the condensate pump 101, and the condensate pump 101 and the filter 102 are connected by the sealed water return main pipe 103; the water-saving assembly 200 comprises a recovery water tank 201, wherein the recovery water tank 201 is connected with a sealed water return main pipe 103 at the bottom of the condensate pump 101.

The valve at the drain tank 105 is closed and the seal water is no longer drained into the power plant's blowdown system. A recovery tank 201 is newly processed, and at the new pipeline of all the way to recovery tank 201 that increases of sealed water return mother pipe 103 middle part trompil, recovery tank 201 export is installed sealed water return mother pipe 103 additional and is filtered 102 bottom sealed water return mother pipe 103 to condensate pump 101 import, relies on condensate pump 101 operation negative pressure with the automatic backheat heating system that inhales of sealed water, realizes the recovery of working medium and recycles. The waste of water resources caused by the fact that sealing water is directly discharged into a power plant for pollution discharge can be avoided, recycling of working media is effectively achieved, and the safety and the economical efficiency of unit operation are improved.

Example 2

Referring to fig. 2, a second embodiment of the present invention is different from the first embodiment in that: the condensate pump 101 comprises a first condensate pump 101a and a second condensate pump 101b, and the top of the first condensate pump 101a is connected with the top of the second condensate pump 101b through a main pipe.

Preferably, a first condensate pump 101a and a second condensate pump 101b are arranged in the water saving device, and isolation valves are respectively additionally arranged on the sealed water return main pipes 103 in front of the inlet filter elements 102 of the first condensate pump 101a and the second condensate pump 101b, so that the first condensate pump 101a and the second condensate pump 101b can be switched in operation modes according to the operation requirements of the system, and the safe and stable operation of the recovery system and the unit can be ensured.

The filter member 102 includes a first filter member 102a and a second filter member 102b, the first filter member 102a is connected to the bottom of the first condensate pump 101a, and the second filter member 102b is connected to the bottom of the second condensate pump 101 b.

A first water flow pipe 104a is provided on the first condensate pump 101a side, the other end of the first water flow pipe 104a is provided at the drain tank 105, a second water flow pipe 104b is provided on the second condensate pump 101b side, the other end of the second water flow pipe 104b is provided at the drain tank 105, a third water flow pipe 104c is provided on the first condensate pump 101a side, a fourth water flow pipe 104d is provided on the second condensate pump 101b side, and the third water flow pipe 104c and the fourth water flow pipe 104d are at the collection point a.

The collection point B is arranged in the middle of the third water flow pipe 104c, and the sealed water return main pipe 103 at the other side of the recovery water tank 201 is connected with the third water flow pipe 104c at the collection point B.

The sealed water return main pipe 103 arranged on one side of the recovery water tank 201 is connected with the sealed water return main pipe 103 connected to the bottom of the first filter element 102a, and the sealed water return main pipe 103 arranged on the other side of the recovery water tank 201 is connected with the sealed water return main pipe 103 connected to the bottom of the second filter element 102 b.

Further, when the device is operated, a valve close to the outlet of the sealed water return main pipe 103 of the drainage box 105 is closed, and the sealed water is not discharged into a drainage system of the power plant. Closing a valve between the recovery water tank 101 and the filtering element 102, opening a valve between the convergence point B and the recovery water tank 201, automatically sucking the sealing water into the recovery water tank 201 by means of the running negative pressure of the condensate pump 101 for regenerative heating, realizing the recycling of the working medium, opening a valve between the recovery water tank 101 and the filtering element 102, closing the valve between the convergence point B and the recovery water tank 201, conveying the waste water to the condensate pump 101 through the sealing water return main pipe 103, and conveying the waste water to the drainage tank 105.

Example 3

Referring to fig. 3 to 4, a third embodiment of the present invention is different from the first two embodiments: the outside of the condensate pump 101 is sleeved with a contact type water seal ring 106.

Furthermore, the contact water seal ring 106 can prevent the oxygen content of condensed water from increasing due to the fact that external air is sucked into the condensed water pump 101, corrosion of the sealing water to the pump body bolt can be reduced due to the contact water seal ring 106, and the pollution of safe and economical operation of equipment and leakage to the operation environment of the equipment is improved.

The top of the contact water seal ring 106 is provided with a sealing rubber strip clamping groove 107, and the middle of the contact water seal ring 106 is provided with a water retaining ring 108.

Furthermore, a sealing rubber strip clamping groove 107 is formed in the top of the contact type water seal ring 106, and the sealing rubber strip clamping groove 107 and a main shaft of the condensate pump 101 form contact type sealing during installation; in order to prevent the splashing of the sealing water, a water retaining ring 108 is additionally arranged in the middle of the contact type water seal ring 106.

The bottom of the contact type water seal ring 106 is also provided with a base 109, and the base 109 is connected with the condensate pump 101 through bolts.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the utility model, or those unrelated to enabling the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. The utility model provides a LDTN condensate pump seals water saving fixtures which characterized in that: comprises the steps of (a) preparing a substrate,

the main body assembly (100) comprises a condensate pump (101), a filtering piece (102) and a sealed water return main pipe (103), wherein the filtering piece (102) is arranged at a water outlet of the condensate pump (101), and the condensate pump (101) is connected with the filtering piece (102) through the sealed water return main pipe (103);

the water saving assembly (200) comprises a recovery water tank (201), wherein the recovery water tank (201) is connected with a sealed water return main pipe (103) at the bottom of the condensate pump (101).

2. The LDTN condensate pump seal water saving device of claim 1, characterized in that: the condensate pump (101) comprises a first condensate pump (101a) and a second condensate pump (101b), and the top of the first condensate pump (101a) is connected with the top of the second condensate pump (101b) through a main pipe.

3. The sealed water-saving device of the LDTN condensate pump as claimed in claim 2, wherein: the filter member (102) comprises a first filter member (102a) and a second filter member (102b), the first filter member (102a) is connected to the bottom of the first condensate pump (101a), and the second filter member (102b) is connected to the bottom of the second condensate pump (101 b).

4. The LDTN condensate pump seal water saving device of claim 3, characterized in that: first condensate pump (101a) one side is provided with first rivers pipe (104a), first rivers pipe (104a) other end sets up in drain box (105) department, second condensate pump (101b) one side is provided with second rivers pipe (104b), the other end setting of second rivers pipe (104b) is in drain box (105) department, first condensate pump (101a) one side still is provided with third rivers pipe (104c), second condensate pump (101b) one side still is provided with fourth rivers pipe (104d), third rivers pipe (104c) with fourth rivers pipe (104d) are at collection point A.

5. The LDTN condensate pump seal water saving device of claim 4, characterized in that: the collection point B is arranged in the middle of the third water flow pipe (104c), and the sealed water return main pipe (103) at the other side of the recovery water tank (201) is connected with the third water flow pipe (104c) at the collection point B.

6. The LDTN condensate pump seal water saving device of claim 5, characterized in that: the sealed water return main pipe (103) arranged on one side of the recovery water tank (201) is connected with the sealed water return main pipe (103) connected to the bottom of the first filter element (102a), and the sealed water return main pipe (103) arranged on the other side of the recovery water tank (201) is connected with the sealed water return main pipe (103) connected to the bottom of the second filter element (102 b).

7. The LDTN condensate pump seal water saving device of claim 6, characterized in that: and a contact type water seal ring (106) is sleeved on the outer side of the condensate pump (101).

8. The LDTN condensate pump seal water saving device of claim 7, characterized in that: a sealing rubber strip clamping groove (107) is formed in the top of the contact type water seal ring (106), and a water retaining ring (108) is arranged in the middle of the contact type water seal ring (106).

9. The LDTN condensate pump seal water saving device of claim 8, characterized in that: the bottom of the contact type water seal ring (106) is further provided with a base (109), and the base (109) is connected with the condensate pump (101) through a bolt.