High-temperature condensate water recovery pump with cooling and flushing system

Abstract

The utility model belongs to the technical field of delivery pumps, and particularly relates to a high-temperature condensate water recovery pump with a cooling and flushing system, which comprises a spiral sleeve. Pump shells are arranged at the two ends of the spiral sleeve, pump covers are arranged on the inner sides of the pump shells, bearing boxes are arranged at one ends of the pump shells, bearing bodies are arranged in the bearing boxes, the spiral sleeve, the pump shells and the bearing boxes are fixedly connected through stay bolts, and a left bearing gland and a right bearing gland are arranged on the bearing boxes at the two ends correspondingly. A spiral sleeve is arranged in the pump cover, a spiral shaft is arranged in an inner cavity of the spiral sleeve, a left half shaft and a right half shaft are arranged at the two ends of the spiral shaft respectively, shaft sleeves are arranged on the surfaces of the left half shaft and the right half shaft respectively, a primary seal and a secondary seal are arranged between the shaft sleeves and the pump cover, and a sealing spacer bush is arranged between the primary seal and the secondary seal. The structure is reasonable, the temperature of the sealing position is reduced, the service life of the rotary seal is prolonged, and the effect of greatly prolonging the service life of the shaft seal is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of delivery pumps, in particular to a high-temperature condensate water recovery pump with a cooling and flushing system. Background Art

[0002] Condensate transportation is common in almost all walks of life in industrial enterprises. For example, papermaking, coal chemical industry, fine chemical industry, petroleum and petrochemical industries all have condensate transportation occasions, which is a major project of heat recovery at present. The condensate medium, as water condensed from steam in the process, is not a medium with a fixed temperature. The condensate temperature is basically in the range of 60-150℃. The temperature of high-temperature condensate is relatively high, basically above 130℃, and the highest instantaneous temperature can even reach 180℃. This causes the complexity of condensate transportation: high-temperature condensate is more special, accompanied by the fluctuation of liquid temperature, it is easier to cause condensate vaporization, and it belongs to a gas-liquid two-phase fluid accompanied by water vapor.

[0003] The temperature of high-temperature condensed water changes, causing pressure changes. Once the pressure is lower than the saturated vapor pressure of its temperature value, liquid water will easily vaporize to produce water vapor. If a mechanical seal is used for sealing, it is easy to cause the mechanical seal to lack liquid, dry burn, damage and leakage.

[0004] For this purpose, we propose a high-temperature condensate recovery pump with a cooling and flushing system. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the problems existing in the prior art, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a high-temperature condensate recovery pump with a cooling and flushing system. During use, through the flushing circulation loop of the pump itself, the flushing liquid cooled by the heat exchanger is connected between the two rotating seals to reduce the temperature of the sealing position and extend the service life of the rotating seal; by adjusting the reflux volume, the temperature of the rotating seal can be accurately controlled, especially the working temperature of the secondary seal and the rear end seal can be effectively reduced, which greatly extends the service life of the shaft seal.

[0008] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0009] A high-temperature condensate recovery pump with a cooling and flushing system, comprising a spiral sleeve;

[0010] in,

[0011] A pump casing is provided at both ends of the spiral sleeve, a pump cover is provided on the inner side of the pump casing, a bearing box is provided at one end of the pump casing, a bearing body is provided inside the bearing box, and the spiral sleeve, the pump casing and the bearing box are fixedly connected by pull rod bolts, a left bearing pressure cover and a right bearing pressure cover are respectively provided on the bearing boxes at both ends, a spiral shaft is provided in the inner cavity of the spiral sleeve, a left half shaft and a right half shaft are respectively provided at both ends of the spiral shaft, and shaft sleeves are provided on the surfaces of the left half shaft and the right half shaft, a primary seal and a secondary seal are provided between the shaft sleeve and the pump cover, a sealing spacer is provided between the primary seal and the secondary seal, a sealing chamber liquid outlet interface and a sealing chamber liquid inlet interface are respectively provided on the top and bottom of the sealing spacer, the sealing chamber liquid outlet interface and the sealing chamber liquid inlet interface are connected with a heat exchange reflux pipeline, and a liquid inlet pipe and a liquid outlet pipe are respectively provided on the outer wall of the spiral sleeve, and the liquid inlet pipe and the liquid outlet pipe are connected with a cooling flushing pipeline.

[0012] As a preferred solution of the high-temperature condensate recovery pump with a cooling and flushing system described in the utility model, a bracket is provided at the bottom of the spiral sleeve.

[0013] As a preferred solution of the high-temperature condensate water recovery pump with a cooling and flushing system described in the utility model, a hanging ring is provided on the top of the pump housing.

[0014] As a preferred solution of the high-temperature condensate water recovery pump with a cooling and flushing system described in the utility model, wherein: the liquid inlet pipe and the liquid outlet pipe are both provided with connection ports.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: during use, through the flushing circulation loop of the pump, a flushing liquid cooled by a heat exchanger is connected between the two rotating seals to reduce the temperature at the sealing position and extend the service life of the rotating seal; by adjusting the reflux volume, the temperature of the rotating seal can be accurately controlled, especially the working temperature of the secondary seal and the rear end seal can be effectively reduced, which greatly extends the service life of the shaft seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a side structural schematic diagram of the utility model.

[0019] In the figure; 1 left bearing gland, 2 left half shaft, 3 bearing box, 4 sleeve, 5 pump cover, 6 pump casing, 7 bracket, 8 spiral sleeve, 9 spiral shaft, 10 liquid outlet pipe, 11 tie rod bolt, 12 liquid inlet pipe, 13 lifting ring, 14 primary seal, 15 sealing spacer, 16 sealing chamber liquid outlet interface, 17 secondary seal, 18 sealing chamber liquid inlet interface, 19 bearing body, 20 right bearing gland, 21 right half shaft, 22 cooling flushing pipeline, 23 heat exchange reflux pipeline. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] The utility model provides the following technical solutions: a high-temperature condensate recovery pump with a cooling and flushing system. During use, a flushing liquid cooled by a heat exchanger is connected between two rotary seals through the flushing circulation loop of the pump itself, so as to reduce the temperature of the sealing position and extend the service life of the rotary seal; the temperature of the rotary seal can be accurately controlled by adjusting the reflux flow, especially effectively reducing the working temperature of the secondary seal and the rear end seal, which greatly extends the service life of the shaft seal;

[0025] Figure 1 to Figure 2The structure diagram of a high-temperature condensate recovery pump with a cooling and flushing system according to an embodiment of the utility model is shown, and the main part thereof includes a spiral sleeve 8;

[0026] Please refer again Figure 1 to Figure 2 : Pump casing 6 is arranged at both ends of the spiral sleeve 8, a pump cover 5 is arranged on the inner side of the pump casing 6, a bearing box 3 is arranged at one end of the pump casing 6, a bearing body 19 is arranged inside the bearing box 3, and the spiral sleeve 8, the pump casing 6 and the bearing box 3 are fixedly connected by a tie rod bolt 11, a left bearing gland 1 and a right bearing gland 20 are arranged on the upper side of the bearing box 3 at both ends, a spiral shaft 9 is arranged in the inner cavity of the spiral sleeve 8, a left half shaft 2 and a right half shaft 21 are arranged at both ends of the spiral shaft 9, a shaft sleeve 4 is arranged on the surface of the left half shaft 2 and the right half shaft 21, and a primary seal 14 and a secondary seal 14 are arranged between the shaft sleeve 4 and the pump cover 5 A sealing spacer 15 is arranged between the seal 17, the primary seal 14 and the secondary seal 17, the top and bottom of the sealing spacer 15 are respectively provided with a sealing chamber liquid outlet interface 16 and a sealing chamber liquid inlet interface 18, the sealing chamber liquid outlet interface 16 and the sealing chamber liquid inlet interface 18 are connected to a heat exchange reflux pipeline 23, the outer wall of the spiral sleeve 8 is respectively provided with a liquid inlet pipe 12 and a liquid outlet pipe 10, the liquid inlet pipe 12 and the liquid outlet pipe 10 are connected to a cooling flushing pipeline 22, the bottom of the spiral sleeve 8 is provided with a bracket 7, the top of the pump housing 6 is provided with a lifting ring 13, and the liquid inlet pipe 12 and the liquid outlet pipe 10 are both provided with connection ports.

[0027] Working principle: During the use of the utility model, through the flushing circulation loop of the pump, the flushing liquid cooled by the heat exchanger is connected between the two rotary seals to reduce the temperature of the sealing position and extend the service life of the rotary seal; through the adjustment of the reflux flow, the temperature of the rotary seal can be accurately controlled, especially the working temperature of the secondary seal and the rear end seal can be effectively reduced, which greatly extends the service life of the shaft seal.

[0028] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A high-temperature condensate recovery pump with a cooling and flushing system, characterized in that: comprising a spiral sleeve (8); in, A pump casing (6) is disposed at both ends of the spiral sleeve (8), a pump cover (5) is disposed on the inner side of the pump casing (6), a bearing box (3) is disposed at one end of the pump casing (6), a bearing body (19) is disposed inside the bearing box (3), and the spiral sleeve (8), the pump casing (6) and the bearing box (3) are fixedly connected by tie rod bolts (11), a left bearing pressure cover (1) and a right bearing pressure cover (20) are disposed on the upper side of the bearing boxes (3) at both ends, a spiral shaft (9) is disposed in the inner cavity of the spiral sleeve (8), a left half shaft (2) and a right half shaft (21) are disposed at both ends of the spiral shaft (9), and the surfaces of the left half shaft (2) and the right half shaft (21) are provided with A shaft sleeve (4) is arranged, a primary seal (14) and a secondary seal (17) are arranged between the shaft sleeve (4) and the pump cover (5), a sealing spacer (15) is arranged between the primary seal (14) and the secondary seal (17), a sealing chamber liquid outlet interface (16) and a sealing chamber liquid inlet interface (18) are arranged at the top and bottom of the sealing spacer (15), respectively, the sealing chamber liquid outlet interface (16) and the sealing chamber liquid inlet interface (18) are connected to a heat exchange reflux pipeline (23), and an outer wall of the spiral sleeve (8) is respectively provided with a liquid inlet pipe (12) and a liquid outlet pipe (10), and the liquid inlet pipe (12) and the liquid outlet pipe (10) are connected to a cooling flushing pipeline (22).

2. A high-temperature condensate recovery pump with a cooling and flushing system according to claim 1, characterized in that: A support (7) is provided at the bottom of the spiral sleeve (8).

3. A high-temperature condensate recovery pump with a cooling and flushing system according to claim 1, characterized in that: A lifting ring (13) is provided on the top of the pump housing (6).

4. A high-temperature condensate recovery pump with a cooling and flushing system according to claim 1, characterized in that: The liquid inlet pipe (12) and the liquid outlet pipe (10) are both provided with connection ports.

Images