CN212924849U

CN212924849U - Utilize steam to carry out constant temperature and carry and purge system

Info

Publication number: CN212924849U
Application number: CN202020991722.9U
Authority: CN
Inventors: 刘明涛; 王志勇; 丁巍; 王冰
Original assignee: Jilin Tongbo Chemical Co ltd
Current assignee: Jilin Tongbo Chemical Co ltd
Priority date: 2020-06-03
Filing date: 2020-06-03
Publication date: 2021-04-09
Anticipated expiration: 2030-06-03

Abstract

The utility model discloses an utilize steam to carry out constant temperature and carry and purge system, return mouthful, stainless steel flexible coupling, strengthening rib, inner tube, outer tube, press from both sides cover pipeline including steam import, outlet valve, steam purge valve, baiting valve, insulation material, steam. The designed jacket conveying pipeline realizes the constant temperature function of the inner pipe by utilizing the circulating operation of steam in the jacket so as to ensure that the raw material conveyed by the inner pipe and needing heat preservation maintains liquid state; the pipe-to-pipe connection is not required to be carried out by flanges or bolts, the connection part is not required to be protected additionally to prevent frostbite, the loss of air leakage and the like caused by pipeline frostbite is avoided, 24-hour heat supply is not required, and the energy is saved; the designed purging system can completely clear the material which is easy to have biological phase change in the equipment out of the pipeline so as to ensure the smoothness of the production line.

Description

Utilize steam to carry out constant temperature and carry and purge system

Technical Field

The utility model belongs to the technical field of the explosive production, a utilize steam to carry and sweep system with constant temperature is related to.

Background

The oil-water phase preparation and matrix preparation processes in explosive production need to be separately established, which relates to the transportation process of raw materials with different phases, for example, ammonium nitrate solution after ammonium nitrate is dissolved, and the raw materials need to be transported to a matrix preparation workshop which is 80 meters away by a pump. Because the crystallization point of the 95 percent ammonium nitrate solution is about 120 ℃. Therefore, the pipelines for conveying must be insulated, the traditional conveying pipelines are connected by flanges every 6 meters or 12 meters, the pipes must be bridged for insulation and the steam conveying needs to be maintained for 24 hours, firstly, the cold weather joints are ensured to be insulated, otherwise, the cold weather joints are frozen and air leakage occurs, and secondly, the residual ammonium nitrate in the pipelines can be crystallized to block the pipelines. The waste of resources is caused, and workers need to be on duty for 24 hours to conduct management and control.

Disclosure of Invention

In order to solve the defects and shortcomings, the utility model provides an utilize steam to carry out constant temperature conveying and purging system.

A system for carrying out constant-temperature conveying and purging by utilizing steam comprises a steam inlet, a steam return opening, a water drain valve, a discharge valve and stainless steel flexible connection, wherein the generated steam enters a jacket of a jacket conveying pipeline from the steam inlet and flows, and is conveyed back to a steam generating tank from the steam return opening for recycling the steam; the jacket conveying pipeline comprises an inner pipe, an outer pipe and reinforcing ribs, the outer pipe is sleeved outside the inner pipe, a jacket space is formed between the outer pipe and the inner pipe, a certain distance is reserved between the outer pipe and the inner pipe, the reinforcing ribs are positioned in the jacket between the inner pipe and the outer pipe, at least 3 reinforcing ribs with certain length are fixed in the jacket at intervals, and the reinforcing ribs are fixed on the outer side of the inner pipe; the lower end of the steam inlet is provided with a first drain valve, the lower end of the steam return opening is provided with a second drain valve, and the second drain valve is positioned above the stainless steel flexible connector; the jacket conveying pipeline is provided with a certain inclination along the advancing direction of the materials to be insulated; a steam purge valve is arranged on a downstream pipeline of the discharge valve below the material tank body, and the steam purge valve is positioned at the front end of the jacket conveying pipeline so that steam can enter the conveying pipeline; and heat insulation materials are arranged at the contact positions of the outer sides of the jacket conveying pipelines and the wall body.

Preferably, the outer pipe and the outer pipe are fixed by welding, and the inner pipe are fixed by welding.

Preferably, the welding points of the outer tube and the inner tube are offset from each other.

Preferably, the reinforcing rib is fixed on the outer side of the inner pipe in a welding mode.

Preferably, the reinforcing rib is solid round steel.

Preferably, the distance between the inner pipe and the outer pipe is 8-15 mm.

Preferably, the heat insulation materials arranged at the contact positions of the outer sides of the jacket conveying pipelines and the wall body are aluminum silicate heat insulation materials.

The utility model discloses a theory of operation is: the ammonium nitrate solution after the ammonium nitrate is melted is pumped into an inner pipe of a jacket conveying pipeline by a centrifugal pump and conveyed to a substrate preparation workshop, steam is arranged on a jacket layer between the inner pipe and an outer pipe of the jacket conveying pipeline for heat preservation, when the ammonium nitrate solution is conveyed, a discharge valve is closed, a steam purging valve is opened, steam purges the ammonium nitrate solution remained in the pipeline due to the existence of steam pressure, the ammonium nitrate solution in the jacket conveying pipeline is all blown into the substrate preparation workshop, a steam inlet is closed after the workshop is finished, drain valves in two directions are respectively opened, and the steam and condensed water in the jacket conveying pipeline are discharged.

The utility model discloses the beneficial effect who reaches is: 1. the designed jacket conveying pipeline realizes the constant temperature function of the inner pipe by utilizing the circulating operation of steam in the jacket so as to ensure that the raw materials conveyed in the inner pipe and needing heat preservation are maintained in a liquid state and prevent pipeline blockage and delayed reaction caused by crystallization; 2. the designed jacket conveying pipeline does not need flanges or bolts to connect pipes, does not need to protect the joints additionally to prevent frostbite, does not need 24-hour heat supply, and solves the loss such as air leakage and the like caused by pipeline frostbite; 3. the designed jacket conveying pipeline has a certain inclination, and the raw materials can automatically run to a target workshop by utilizing the dead weight, so that the energy is saved; 4. the designed steam purging system can completely clear the materials which are easy to have biological phase change in the pipeline out of the pipeline so as to ensure the smoothness of a production line; 5. the method is economical and applicable, low in cost, strong in operability and low in maintenance cost.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a partial schematic view of the present invention;

fig. 2 is a schematic view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a cross-sectional view of a jacketed transfer line;

in the figure: 1. a steam inlet; 2. a water escape valve II; 3. a steam purge valve; 4. a discharge valve; 5. a thermal insulation material; 6. returning the steam; 7. a first water drain valve; 8. stainless steel flexible connection; 9. reinforcing ribs; 10. an inner tube; 11. an outer tube; 12. jacketed transfer lines.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

A system for carrying out constant-temperature conveying and blowing by utilizing steam comprises a steam inlet 1, a water drain valve II 2, a steam blowing valve 3, a discharge valve 4, a heat insulation material 5, a steam return opening 6, a water drain valve I7, a stainless steel flexible connection 8, a reinforcing rib 9, an inner pipe 10, an outer pipe 11 and a jacket conveying pipeline 12. The jacket conveying pipeline 12 can convey 80-100 meters, the inner pipe 10 is DN65, the distance between the inner pipe and the outer pipe 11 is generally designed to be 8-15 mm, the occupied area of too narrow steam is small, the heat preservation effect of the inner pipe is poor, the area of too large steam is too large, resource waste is caused, 12mm is designed for the jacket conveying pipeline, the outer pipe is a stainless steel seamless steel pipe with the DN100, and in order to enhance the strength of the jacket conveying pipeline, the welding point of the outer pipe and the welding point of the inner pipe are staggered with each other and generally range from 1.5-3 meters. The present case is for guaranteeing 80~100 meters's transport distance, and the inner tube remains between two parties throughout, and the problem that does not appear collapsing to for guaranteeing steam can high-efficient heat retaining effect, every 3 meters divide on pressing from both sides the cover circumference equally and weld 3 long 30 mm's of diameter 10mm strengthening rib 9, the welding point is for pressing from both sides the inner tube outside of cover pipeline, and comprehensive cost and technological effect the present case adopts solid round steel. And after the jacket conveying pipeline is welded and formed, one end of the jacket conveying pipeline is connected with the steam inlet 1, the other end of the jacket conveying pipeline is connected with the steam return opening 6, so that steam can be recycled, and a first drain valve 7 and a second drain valve 2 are respectively arranged at the two ends of the jacket conveying pipeline. In order to prevent expansion with heat and contraction with cold, a stainless steel flexible connection 8 is arranged at the lower end of a first 7 tail end drain valve of the jacket conveying pipeline, and for conveying, the jacket conveying pipeline is designed to form a flow direction along the material conveying direction by 1: a slope of 100. In order to pass through the wall for heat preservation, aluminum silicate heat preservation materials 5 are arranged at the outer side wall passing positions of the jacket conveying pipelines. In order to prevent ammonium nitrate solution from remaining in the conveying pipeline, after a pump body for conveying materials stops, the steam purge valve 3 is opened, the residual ammonium nitrate solution in the jacket conveying pipeline is blown into a tank of a matrix workshop by steam pressure, the situation that the ammonium nitrate solution passes through the pipeline is not remained is guaranteed, the blockage caused by ammonium nitrate crystallization due to low temperature is avoided, after work is finished, only two drain valves are needed to be opened respectively, the situation that the steam and condensed water in the pipeline are all discharged out of the pipeline is guaranteed, and the problems of air leakage and the like caused by frostbite of the pipeline are avoided being monitored manually for 24 hours in 24-hour steam operation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an utilize steam to carry out constant temperature and carry and purge system, includes that steam inlet, steam return, outlet valve, baiting valve, stainless steel flexible coupling, its characterized in that: after the steam is generated, the steam enters the jacket of the jacket conveying pipeline from the steam inlet to flow, and is conveyed back to the steam generating tank from the steam return port to be recycled; the jacket conveying pipeline comprises an inner pipe, an outer pipe and reinforcing ribs, the outer pipe is sleeved outside the inner pipe, a jacket space is formed between the outer pipe and the inner pipe, a certain distance is reserved between the outer pipe and the inner pipe, the reinforcing ribs are positioned in the jacket between the inner pipe and the outer pipe, at least 3 reinforcing ribs with certain length are fixed in the jacket at certain intervals, and the reinforcing ribs are fixed on the outer side of the inner pipe; the lower end of the steam inlet is provided with a first drain valve, the lower end of the steam return opening is provided with a second drain valve, and the second drain valve is positioned above the stainless steel flexible connector; the jacket conveying pipeline is provided with a certain inclination along the advancing direction of the materials to be insulated; a steam purging valve is arranged on a downstream pipeline of the discharge valve below the material tank body, and the steam purging valve is positioned at the front end of the jacket conveying pipeline, so that steam can enter the conveying pipeline; and heat insulation materials are arranged at the contact positions of the outer sides of the jacket conveying pipelines and the wall body.

2. A system for constant temperature delivery and purging with steam as defined in claim 1 wherein: the outer pipe and the outer pipe are fixed in a welding mode, and the inner pipe are fixed in a welding mode.

3. A system for constant temperature delivery and purging with steam as defined in claim 2 wherein: the welding point of the outer pipe and the welding point of the inner pipe are staggered.

4. A system for constant temperature delivery and purging with steam as defined in claim 1 wherein: the reinforcing rib is fixed on the outer side of the inner pipe.

5. The system for constant temperature delivery and purge with steam of claim 4, wherein: the reinforcing rib is made of solid round steel.

6. A system for constant temperature delivery and purging with steam as defined in claim 1 wherein: the distance between the inner pipe and the outer pipe is 8-15 mm.

7. A system for constant temperature delivery and purging with steam as defined in claim 1 wherein: the heat insulation materials arranged at the contact positions of the outer sides of the jacket conveying pipelines and the wall body are aluminum silicate heat insulation materials.