CN219995646U

CN219995646U - Freeze-drying anti-cracking pipe device

Info

Publication number: CN219995646U
Application number: CN202321209295.4U
Authority: CN
Inventors: 蒋达博; 史凌洋; 冯晓龙; 张利蓉; 徐平俊
Original assignee: Chengdu Tongde Pharmaceutical Co ltd
Current assignee: Chengdu Tongde Pharmaceutical Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-11-10
Anticipated expiration: 2033-05-18

Abstract

The utility model discloses a freeze-drying anti-cracking pipe device, which relates to the field of freeze drying and comprises a silicone oil inner pipe and a cooling outer pipe, wherein a water inlet and a water outlet of the cooling outer pipe are respectively communicated with an inlet side and an outlet side of the silicone oil inner pipe, and valves are arranged on communicating pipes; the inlet side is provided with first valve, is provided with the first "U" venturi tube of undercut between the entry side of first valve and silicone oil inner tube, and the entry side of first valve and silicone oil inner tube all communicates with first "U" venturi tube. According to the utility model, the valve at the water inlet is communicated with the U-shaped pipe arranged on the inlet side pipeline of the silicone oil inner pipe, so that the purposes that the valve leaks water to pollute the silicone oil system, the temperature of the tank body cannot be ensured to discard the whole batch of products and the heat exchanger is broken due to water ice expansion are achieved.

Description

Freeze-drying anti-cracking pipe device

Technical Field

The utility model relates to the field of freeze drying, in particular to a freeze-drying anti-cracking pipe device.

Background

The freeze-dried product belongs to mature technology in industry, and due to the specificity of the sterile preparation, the box body needs to be sterilized at high temperature of 121 ℃ after the production of each batch of products is finished, the sterilized plate layer temperature is very high, the plate layer temperature needs to be reduced to room temperature for production, the natural cooling time is at least more than 12 hours, and the production scheduling and the production efficiency are very unfavorable.

In order to solve the technical problems, silicone oil cooling devices are currently on the market, and the principle of the silicone oil cooling devices is that the temperature of a plate layer is rapidly reduced through heat exchange of heat conduction media of the plate layer. However, this solution has many design drawbacks, which lead to the introduction of greater hidden danger and risk, because in this solution the cooling medium is tap water, internal leakage will occur after the valve is used for a period of time, in the freeze-drying technique the temperature of the slab will reach-55 ℃ in the freeze-drying stage, some products are even lower, in this case the cooling medium tap water will enter the exchanger, the volume will expand after the water has frozen, and further cause the exchanger to rupture, and the heat medium used by the tank slab is silicone oil, at this time the tap water will enter the silicone oil circulation system, the whole silicone oil system is contaminated, at this time the product temperature in the tank will not be guaranteed to be scrapped, the direct economic loss will be more than 50 ten thousand yuan according to the current product mean value, the maintenance cost will be more than 100 ten thousand yuan, at the same time, the leakage of silicone oil has a certain harm to air, water quality and human health. On the other hand, the stress generated by vibration and the stress generated by expansion and contraction in the whole running process of the cooling pipeline are all applied to the exchanger, and the risk and probability of leakage at the welding seam are very high.

In view of this, the present utility model has been made.

Disclosure of Invention

The utility model aims to provide a freeze-drying cracking-preventing pipe device, which solves the problems that a box body cannot ensure that a whole batch of products are scrapped and a heat exchanger is broken due to water ice expansion because a valve at a water inlet is communicated with a U-shaped pipe arranged on an inlet side pipeline of a silicone oil inner pipe and a silicone oil system is polluted by water leakage of the valve.

The embodiment of the utility model is realized by the following technical scheme: the utility model provides a freeze-drying anticracking pipe device, including silicone oil inner tube and cooling outer tube, the water inlet and the delivery port of cooling outer tube respectively with the entry side and the exit side intercommunication of silicone oil inner tube and all be provided with the valve on communicating pipeline to thereby prevent that the cooling water of cooling outer tube from leaking in getting into the exchanger and freezing expansion and leading to the exchanger to break, wherein, the water inlet side is provided with first valve, is provided with the first "U" venturi tube of undercut between the entry side of first valve and silicone oil inner tube, the entry side of first valve and silicone oil inner tube all communicates with first "U" venturi tube.

Preferably, a second valve is arranged on a pipeline which is communicated with the inlet side of the first U-shaped pipe and the silicone oil inner pipe.

Preferably, the first "U" shaped tube has a first fluid level monitoring device mounted thereon.

Preferably, the first valve and the second valve are both normally closed angle seat valves.

Preferably, the second valve and the first "U" shaped tube are in communication by a hose.

Preferably, a third valve is arranged on the water outlet side, and a second U-shaped pipe which is sunken downwards is arranged between the third valve and the outlet side of the silicone oil inner pipe.

Preferably, a fourth valve is arranged on a pipeline which is communicated with the outlet side of the silicone oil inner pipe through the second U-shaped pipe.

Preferably, a second liquid level monitoring device is mounted on the second "U" shaped tube.

Preferably, the third valve and the fourth valve are normally closed angle seat valves.

Preferably, the fourth valve and the second "U" shaped tube are in communication by a hose.

Compared with the prior art, the embodiment of the utility model has the following advantages and beneficial effects:

1. according to the embodiment of the utility model, the U-shaped pipe is arranged on the pipeline at the inlet side of the valve at the water inlet and the silicone oil inner pipe to be communicated, so that accumulated water leaked by the valve after long-time use can be accumulated and buffered, accumulated water of the U-shaped pipe can be discharged, cooling water of the cooling pipe can not enter the exchanger due to leakage of the valve to pollute the silicone oil system to influence the cooling system, meanwhile, due to the arrangement of the U-shaped pipe, accumulated cooling water is difficult to accumulate on the cooling outer pipe at the joint of the valve close to the water inlet and the cooling outer pipe and the silicone oil inner pipe, and even if the cooling water in the U-shaped pipe is frozen and expands in volume, the size constraint of the pipeline is difficult to break, so that the pipeline of the anti-cracking pipe device is broken, and the whole anti-cracking pipe device is further protected.

If the exchanger is damaged because of the freezing expansion of cooling water, the heat exchanger enters a silicone oil system, so that the waste of silicone oil can be caused, or the silicone oil is refined again, the energy is wasted, meanwhile, the leakage of the silicone oil can pollute the air, the water quality and the soil, and the human health is influenced, so that the pollution to the environment and the waste of the silicone oil can be effectively reduced.

2. According to the embodiment of the utility model, the valves are respectively arranged near the two sides of the opening of the U-shaped pipe, and the possibility of water leakage of the cooling outer pipe through the valves is further reduced through the cooperation of the two valves and the U-shaped pipe, because the accumulated water of the U-shaped pipe is filled only when the first valve leaks and the second valve also begins to leak, the accumulated water can possibly enter the exchanger through the second valve from the U-shaped pipe, and the stability of the whole anti-cracking pipe device is further improved through the structural design.

3. According to the embodiment of the utility model, the valve is arranged as the normally-closed angle seat valve, so that the pneumatic butterfly valve in the prior art is replaced, the sealing performance of the whole valve is improved, the internal leakage of the conventional pneumatic butterfly valve can easily occur after the conventional pneumatic butterfly valve is used for a period of time, the sealing performance of the normally-closed angle seat valve is more stable, and the service life is longer. Meanwhile, the detection device is arranged on the U-shaped pipe to detect the water level in the U-shaped pipe, so that accumulated water in the U-shaped pipe can be discharged in time, and the possibility that cooling water enters a silicone oil system is smaller.

In general, the freeze-drying cracking prevention pipe device provided by the embodiment of the utility model can achieve the aim of preventing cooling water from entering an exchanger to freeze, expand and damage the exchanger and enter a silicone oil system to damage a heat exchange system.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a connection structure of a freeze-drying anti-cracking pipe device according to an embodiment of the present utility model;

in the drawings, the reference numerals and corresponding part names:

1-silicone oil inner pipe, 2-cooling outer pipe, 21-water inlet, 22-water outlet, 11-inlet, 12-outlet, 5-first valve, 6-first U-shaped pipe, 7-second valve, 8-first liquid level monitoring device, 9-third valve, 10-second U-shaped pipe, 13-fourth valve, 14-second liquid level monitoring device.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

Examples

As shown in fig. 1, the embodiment of the utility model provides a freeze-drying cracking-preventing pipe device, which comprises a silicone oil inner pipe 1 and a cooling outer pipe 2, wherein the cooling outer pipe 2 is provided with cooling water circulation, and forms a temperature difference with silicone oil in the silicone oil inner pipe 1 to realize radiation heat exchange, so as to cool a silicone oil system of the silicone oil inner pipe 1. The water inlet 21 and the water outlet 22 of the cooling outer tube 2 are respectively communicated with the inlet 11 side and the outlet 12 side of the silicone oil inner tube 1, and valves are arranged on the communicating pipes for preventing cooling water from directly entering the exchanger. Wherein, water inlet 21 side is provided with first valve 5, is provided with the first "U" venturi tube 6 of undercut between the entry 11 side of first valve 5 and silicone oil inner tube 1, and the entry 11 side of first valve 5 and silicone oil inner tube 1 all communicates with first "U" venturi tube 6.

Specifically, the tightness will be degraded when the valve is used for too long, at this time, the cooling water of the cooling outer tube 2 may directly enter the exchanger through the valve, the temperature of the plate layer in the freeze drying technology will reach-55 ℃ in the freezing stage, the volume of the cooling water will expand after freezing in the exchanger, and the exchanger will be broken, in order to solve the above problems, the cooling water leaked by the valve can be accumulated by the first U-shaped tube 6, and the cooling water leaked by the first valve 5 will not be directly conveyed into the exchanger, thereby avoiding the above problems. Meanwhile, the accumulated water in the first U-shaped pipe 6 can be discharged in time, and can be used for detecting whether the first valve 5 leaks or not, namely if the accumulated water exists in the first U-shaped pipe 6, the sealing performance of the first valve 5 is poor, and the first valve 5 can be maintained or replaced in time, so that the internal leakage of cooling water is avoided to a great extent.

Further, the second valve 7 is arranged on the pipeline communicated with the inlet 11 side of the first U-shaped pipe 6 and the silicone oil inner pipe 1, and one valve is respectively arranged near the two sides of the opening of the U-shaped pipe, so that the possibility of water leakage of the cooling outer pipe 2 through the valve is further reduced through the cooperation of the two valves and the U-shaped pipe, and because the accumulated water of the U-shaped pipe is filled only when the first valve 5 leaks, and the second valve 7 also starts to leak, the accumulated water can enter the exchanger through the second valve 7 from the U-shaped pipe, and therefore, the stability of the whole anti-cracking pipe device is further improved through the structural design.

Further, the first liquid level monitoring device 8 is installed on the first U-shaped pipe 6, and the liquid level of cooling ponding in the first U-shaped pipe 6 can be monitored through the first monitoring device, so that an operator can be timely reminded that the first valve 5 starts to leak water or the ponding liquid level reaches a certain height, and ponding in the U-shaped pipe needs to be discharged.

Furthermore, in order to improve the tightness and durability of the valve, the first valve 5 and the second valve 7 are both normally closed angle seat valves, in the existing design scheme, the freeze-drying valve is generally a pneumatic butterfly valve, and compared with the normally closed angle seat valve, the pneumatic butterfly valve is easier to leak water, and the service cycle of leaking water is shorter, so in the embodiment of the utility model, the normally closed angle seat valves are preferably selected for the first valve 5 and the second valve 7, and the tightness and durability of the whole freeze-drying anti-cracking pipe device are better.

Furthermore, because the stress generated by vibration and the stress generated by thermal expansion and contraction in the whole running process of the cooling pipeline are all added on the exchanger, the risk and probability of leakage at the welding seam are very high, and the second valve 7 and the first U-shaped pipe 6 are communicated by a hose, namely, the soft connection is arranged at the welding position of the cooling outer pipe 2 and the silicone oil inner pipe 1, so that the stress can be buffered. The sealing performance and durability of the welding seam are improved.

Further, a third valve 9 is provided on the water outlet 22 side, and a second U-shaped pipe 10 recessed downward is provided between the third valve 9 and the outlet 12 side of the silicone oil inner pipe 1.

Further, a fourth valve 13 is provided on the pipe line of the second "U" pipe 10 communicating with the outlet 12 side of the silicone oil inner pipe 1.

Further, a second level monitoring device 1414 is mounted on the second "U" tube 10.

Further, the third valve 9 and the fourth valve 13 are normally closed angle seat valves.

Further, the fourth valve 13 and the second "U" shaped tube 10 are in communication by a hose.

Specifically, as a preferred embodiment of the utility model, the pipeline on the water outlet 22 side is designed to be the same leakage-proof device as the pipeline on the water inlet 21 side, so that both the water inlet 21 and the water outlet 22 are well protected, and the cooling water is prevented from directly entering the icing expansion damage pipeline of the exchanger through the valve. Of course, in the actual operation and other embodiments, the selection setting may be made according to the volume or configuration of the whole device, so long as a sufficient water leakage preventing effect is achieved.

For example, in other embodiments, the freeze-drying anti-cracking tube device comprises a silicone oil inner tube 1 and a cooling outer tube 2, wherein a water inlet 21 and a water outlet 22 of the cooling outer tube 2 are respectively communicated with an inlet 11 side and an outlet 12 side of the silicone oil inner tube 1, and valves are arranged on communicating pipes; the water inlet 21 side is provided with first valve 5, be provided with the first "U" pipe 6 of undercut between the entry 11 side of first valve 5 and silicone oil inner tube 1, the entry 11 side of first valve 5 and silicone oil inner tube 1 all communicates with first "U" pipe 6, be provided with second valve 7 on the pipeline of the entry 11 side intercommunication of first "U" pipe 6 and silicone oil inner tube 1, delivery port 22 side is provided with third valve 9, first valve 5 and second valve 7 are normally closed angle seat valve.

Specifically, after the water pressure of the water inlet 21 flows through the cooling pipe in the actual operation process, kinetic energy is lost, the water pressure of the cooling water at the water outlet 22 may not be larger than the water pressure of the water inlet 21, and the durability of the third valve 9 is higher than that of the first valve 5, so that the pipe arrangement of the water outlet 22 can be selectively simplified, and waste is avoided.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and that descriptions of well-known components and processing techniques and procedures are omitted so as not to unnecessarily limit the present utility model.

Claims

1. The freeze-drying anti-cracking pipe device comprises a silicone oil inner pipe (1) and a cooling outer pipe (2), and is characterized in that a water inlet (21) and a water outlet (22) of the cooling outer pipe (2) are respectively communicated with an inlet (11) side and an outlet (12) side of the silicone oil inner pipe, and valves are arranged on communicating pipes; the novel water inlet valve is characterized in that a first valve (5) is arranged on the water inlet (21) side, a first U-shaped pipe (6) which is sunken downwards is arranged between the first valve (5) and the inlet (11) side of the silicone oil inner pipe, and the first valve (5) and the inlet (11) side of the silicone oil inner pipe are communicated with the first U-shaped pipe (6).

2. A freeze-drying anti-cracking tube device according to claim 1, characterized in that the first "U" shaped tube (6) is provided with a second valve (7) on the line communicating with the inlet (11) side of the silicone oil inner tube.

3. A freeze-dried anti-cracking tube arrangement according to claim 2, characterized in that the first "U" tube (6) is provided with a first liquid level monitoring device (8).

4. A freeze-dried anti-cracking tube device according to claim 3, characterized in that the first valve (5) and the second valve (7) are both normally closed angle seat valves.

5. A freeze-dried anti-cracking tube arrangement according to claim 4, characterized in that the second valve (7) and the first "U" tube (6) are in communication by a hose.

6. A freeze-dried anti-cracking tube device according to any of claims 1-5, characterized in that a third valve (9) is arranged on the water outlet (22) side, and a second U-shaped tube (10) which is concave downwards is arranged between the third valve (9) and the outlet (12) side of the silicone oil inner tube.

7. A freeze-dried anti-cracking tube device according to claim 6, characterized in that a fourth valve (13) is arranged on the pipeline of the second "U" tube (10) communicating with the outlet (12) side of the silicone oil inner tube.

8. A freeze-dried anti-cracking tube arrangement according to claim 7, characterized in that the second "U" tube (10) is fitted with a second level monitoring device (14).

9. A freeze-dried anti-cracking tube device according to claim 8, characterized in that the third valve (9) and the fourth valve (13) are both normally closed corner seat valves.

10. A freeze-dried anti-cracking tube arrangement according to claim 9, characterized in that the fourth valve (13) and the second "U" tube (10) are in communication by a hose.