CN219625101U

CN219625101U - Positive pressure sampling device

Info

Publication number: CN219625101U
Application number: CN202320133634.9U
Authority: CN
Inventors: 张峰; 季爱飞; 宁胜尧; 王海泼; 孙海波
Original assignee: Changzhou Hequan Pharmaceutical Co ltd
Current assignee: Changzhou Hequan Pharmaceutical Co ltd
Priority date: 2023-02-07
Filing date: 2023-02-07
Publication date: 2023-09-01
Anticipated expiration: 2033-02-07

Abstract

The utility model provides a positive pressure sampling device which can be inserted into a reaction kettle in a closed way, comprising: the device comprises a three-way pipe, a first valve, a second valve and a third valve, a bottom-inserted sampling pipe, a gas back-blowing port and a sampling bottle, wherein the first valve, the second valve and the third valve are connected with the three-way pipe in one-to-one correspondence, the bottom-inserted sampling pipe is connected with the first valve and inserted into the reaction kettle, the gas back-blowing port is connected with the second valve, and the sampling bottle is connected with the third valve. The utility model has simple structure and convenient operation, can ensure that sampling is finished under the positive pressure state, reduces a large number of operation procedures, does not need to take measures for stopping material reaction in the sampling process, does not cause waste of materials and environmental pollution, eliminates potential safety hazards, and effectively avoids leakage of materials, environmental pollution and safety hazard to staff.

Description

Positive pressure sampling device

Technical Field

The utility model relates to the technical field of chemical and medical equipment, in particular to a positive pressure sampling device.

Background

In the chemical production process, the chemical synthesis reaction kettle is pressurized in the production operation, and the materials in the kettle need to be sampled for a plurality of times, and the common operation is that a sampling port is directly arranged on the kettle. When sampling in the reaction kettle, in order to get the material in the kettle, avoid bringing other impurities, firstly discharge the material at the front end of the sampling pipeline to other vessels, sample again, the sampling process operation is cumbersome and inconvenient, and the waste of the material is caused. Especially, many reaction materials have certain toxicity, often meet the sampling of conditions such as smell is big, high toxicity, highly toxic products, and the like, the operation degree of difficulty is big, the dangerous degree is high, consumes very big time and manpower, still can not ensure environment and staff safety, exists environmental pollution and potential safety hazard. Therefore, the sampling which does not cause waste of materials and environmental pollution and eliminates potential safety hazards is an important content of production.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the positive pressure sampling device, which has the advantages of simple structure and convenient operation, can ensure that sampling is completed under the positive pressure state, reduces a large number of operation procedures, does not need to take measures for stopping material reaction in the sampling process, does not cause waste of materials and environmental pollution, eliminates potential safety hazards, and effectively avoids leakage of materials, environmental pollution and safety hazard to staff.

In order to solve the technical problems, the positive pressure sampling device provided by the utility model can be inserted into a reaction kettle in a closed manner, and comprises: the device comprises a three-way pipe, a first valve, a second valve and a third valve, a bottom-inserted sampling pipe, a gas back-blowing port and a sampling bottle, wherein the first valve, the second valve and the third valve are connected with the three-way pipe in one-to-one correspondence, the bottom-inserted sampling pipe is connected with the first valve and inserted into the reaction kettle, the gas back-blowing port is connected with the second valve, and the sampling bottle is connected with the third valve.

Specifically, the sample bottle including the parcel sample cover of sample bottle main part, with sample cover flange joint's sample bottle connects, be located with sample bottle connects top and rather than flange joint's sample bottle tail gas evacuation mouth and can insert in proper order sample bottle tail gas evacuation mouth reaches sample bottle connects and flange joint is in sample bottle inside lining pipe on the sample bottle tail gas evacuation mouth.

Specifically, the three-way pipe is a T-shaped pipe or a Y-shaped pipe.

Specifically, the tail gas emptying port of the sampling bottle is a T-shaped three-way pipe, and the inner diameter of the tail gas emptying port of the sampling bottle in the vertical direction is consistent with the inner diameter of the sampling bottle connector and is larger than the inner diameter of the tail gas emptying port of the sampling bottle in the horizontal direction.

Specifically, the outer diameter of the sample bottle liner tube is less than the inner diameter of the sample bottle connector, thereby providing a gap between the sample bottle connector and the sample bottle liner tube.

Specifically, the gap is communicated with the tail gas emptying port of the sampling bottle.

Specifically, the sampling cover is a cylinder or a cuboid, the periphery of the sampling cover is made of glass, and the upper surface and the lower surface of the sampling cover are made of stainless steel.

Specifically, the materials of the bottom-inserted sampling tube, the sampling bottle connector, the sampling bottle tail gas emptying port and the sampling bottle lining pipe are selected from stainless steel, hastelloy, titanium material, PP, PVC, PTFE or glass fiber reinforced plastic.

Specifically, the gas back-blowing port can be used for introducing gas which does not interfere with the reaction in the reaction kettle.

Specifically, the gas is selected from any one of nitrogen, carbon dioxide or inert gas.

The positive pressure sampling device provided by the utility model has the beneficial effects that:

1. simple structure and easy operation. The liquid material in the reaction kettle needs to be sampled, detected and monitored in the reaction process, and the purpose of sampling can be achieved by only using any one of nitrogen, carbon dioxide or other inert gases to pressurize the reaction kettle.

2. And (3) airtight sampling is performed, so that material leakage is avoided. In the sampling process, the material reaction stopping measures are not needed, the waste of materials and the pollution to the environment are avoided, and the potential safety hazard is eliminated. And the materials in the bottom-inserted sampling tube do not need to be discharged to other vessels, so that a large number of operation procedures are reduced.

3. The environment and personnel safety are protected. On the basis of the existing sampling operation, the waste of materials in the sampling process is reduced, the materials in the sampling pipeline do not need to be additionally collected and treated by an exhaust system, only any one of nitrogen, carbon dioxide or other inert gases is required to be used for sweeping the bottom-inserted sampling tube through the gas back-blowing port, the residual materials are removed, the operation is simple and convenient, the environment cannot be polluted, and the safety is greatly improved.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the following brief description of the drawings is given for the purpose of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without the need for inventive work for a person skilled in the art.

Fig. 1 is a schematic diagram of a positive pressure sampling device according to the present utility model.

FIG. 2 is a schematic view of a portion of the structure of a sample bottle of the present utility model.

Symbol description

1 three-way pipe

2 first valve

3 second valve

4 third valve

Sampling tube with 5 inserted bottom

6 gas back-blowing mouth

7 sample bottle

71 sampling cover

72 sampling bottle joint

73 sampling bottle lining pipe

74 sample bottle tail gas emptying port

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. 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.

Example 1

Referring to fig. 1-2, there is shown a positive pressure sampling device of the present utility model, capable of being inserted in a closed manner into a reaction vessel, comprising: the three-way pipe 1, a first valve 2, a second valve 3 and a third valve 4 which are connected with the three-way pipe 1 in one-to-one correspondence, an inserted bottom sampling tube 5 which is connected with the first valve 2 and inserted into the reaction kettle, a gas back-blowing port 6 which is connected with the second valve 3 and a sampling bottle 7 which is connected with the third valve 4.

The sampling bottle 7 comprises a sampling cover 71 wrapping the main body of the sampling bottle 7, a sampling bottle joint 72 in flange connection with the sampling cover 71, a sampling bottle tail gas emptying port 74 which is positioned above the sampling bottle joint 72 and in flange connection with the sampling bottle joint, and a sampling bottle lining pipe 73 which can be sequentially inserted into the sampling bottle tail gas emptying port 74 and the sampling bottle joint 72 and is in flange connection with the sampling bottle tail gas emptying port 74. The tee 1 is a T-pipe or Y-pipe. The sample bottle tail gas evacuation port 74 is a T-tube having a vertically inner diameter that is consistent with and greater than the inner diameter of the sample bottle nipple 72 in the horizontal direction. The outer diameter of the sample vial liner 73 is smaller than the inner diameter of the sample vial adapter 72, thereby providing a gap between the sample vial adapter 72 and the sample vial liner 73. The void communicates with a sample bottle tail gas evacuation port 74.

The sampling cover 71 is a cylinder or a rectangular parallelepiped, four Zhou Caizhi are glass, and the upper and lower surfaces are made of stainless steel. The materials of the bottom-inserted sampling tube 5, the sampling bottle joint 72, the sampling bottle lining tube 73 and the sampling bottle tail gas emptying port 74 are selected from stainless steel, hastelloy, titanium, PP, PVC, PTFE or glass fiber reinforced plastics. The gas back-blowing port 6 can be used for introducing gas which does not interfere with the reaction in the reaction kettle. The gas is selected from any one of nitrogen, carbon dioxide or inert gas.

Example two

The positive pressure sampling device provided by the utility model comprises the following operation steps:

(1) During sampling, the second valve 3 is closed, the first valve 2 and the third valve 4 are simultaneously opened, nitrogen is introduced into the reaction kettle through the gas back-blowing port 6 to pressurize the reaction kettle, and the liquid sample flows into the sampling bottle 7 wrapped by the sampling cover 71 through the bottom-inserted sampling tube 5, the first valve 2, the three-way tube 1, the third valve 4 and the sampling bottle lining tube 73 in sequence.

(2) If too much tail gas is mixed in the sampling liquid, and the tail gas in the sampling bottle 7 is too high, the tail gas is communicated with a tail gas emptying port 74 of the sampling bottle through a gap between a joint 72 of the sampling bottle and a lining pipe 73 of the sampling bottle, so that the tail gas is directly discharged out of the sampling bottle 7 and enters a tail gas absorption system.

(3) After the sampling is finished, the third valve 4 is closed, the first valve 2 and the second valve 3 are simultaneously opened, and any one of nitrogen, carbon dioxide or inert gas is used for purging the bottom-inserted sampling tube 5 through the gas back-blowing port 6 to remove residual materials.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the scope of the utility model, but rather to cover any modifications, equivalents, improvements or the like within the spirit and scope of the present utility model.

Claims

1. The utility model provides a positive pressure sampling device, can airtight reation kettle of inserting which characterized in that includes: the device comprises a three-way pipe, a first valve, a second valve and a third valve, a bottom-inserted sampling pipe, a gas back-blowing port and a sampling bottle, wherein the first valve, the second valve and the third valve are connected with the three-way pipe in one-to-one correspondence, the bottom-inserted sampling pipe is connected with the first valve and inserted into the reaction kettle, the gas back-blowing port is connected with the second valve, and the sampling bottle is connected with the third valve.

2. The positive pressure sampling device of claim 1, wherein the sampling bottle comprises a sampling cap surrounding the sampling bottle body, a sampling bottle connector flange-connected with the sampling cap, a sampling bottle tail gas evacuation port above the sampling bottle connector and flange-connected with the sampling bottle connector, and a sampling bottle liner tube capable of being sequentially inserted into the sampling bottle tail gas evacuation port and the sampling bottle connector and flange-connected with the sampling bottle tail gas evacuation port.

3. The positive pressure sampling device of claim 1, wherein the tee is a T-tube or a Y-tube.

4. The positive pressure sampling device of claim 2, wherein the sampling bottle tail gas evacuation port is a T-shaped tee having a vertically oriented inner diameter that is consistent with and greater than the inner diameter of the sampling bottle nipple.

5. The positive pressure sampling device of claim 2, wherein the outer diameter of the sampling bottle liner tube is less than the inner diameter of the sampling bottle nipple such that there is a gap between the sampling bottle nipple and the sampling bottle liner tube.

6. The positive pressure sampling device of claim 5, wherein the void communicates with the sampling bottle vent.

7. The positive pressure sampling device of claim 2, wherein the sampling hood is a cylinder or a cuboid, the periphery of which is made of glass, and the upper and lower surfaces of which are made of stainless steel.

8. The positive pressure sampling device of claim 2, wherein the materials of the bottom-inserted sampling tube, the sampling bottle connector, the sampling bottle tail gas evacuation port and the sampling bottle lining tube are selected from stainless steel, hastelloy, titanium, PP, PVC, PTFE or glass fiber reinforced plastic.

9. The positive pressure sampling device of claim 1, wherein the gas back-blowing port is configured to allow for the passage of a gas that does not interfere with the reaction in the reaction vessel.

10. The positive pressure sampling device of claim 9, wherein the gas is selected from any one of nitrogen, carbon dioxide, or an inert gas.