CN213714859U - Vinyl chloride monomer sampling device - Google Patents
Vinyl chloride monomer sampling device Download PDFInfo
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- CN213714859U CN213714859U CN202022238392.9U CN202022238392U CN213714859U CN 213714859 U CN213714859 U CN 213714859U CN 202022238392 U CN202022238392 U CN 202022238392U CN 213714859 U CN213714859 U CN 213714859U
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- vinyl chloride
- chloride monomer
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Abstract
The utility model discloses a vinyl chloride monomer sampling device, which comprises a sample bottle for containing samples, wherein the sample bottle is made of transparent materials; the protective cover is sleeved on the outer wall of the sample bottle and is provided with an observation part for observing the interior of the sample bottle; the sampling valve is connected with the sample bottle in an airtight mode through a connecting structure and used for sampling from a vinyl chloride monomer production device, and the sampling valve comprises a valve body, a valve pipe base and a sampling joint. The advantages are that: 1) avoid operating personnel and vinyl chloride monomer contact to adopted safety facilities such as protection casing and safe chaining, improved the security of vinyl chloride monomer sampling operation. 2) But direct observation sample appearance and nimble control sample volume in the sample prevent that the sample volume is not enough, and sample bottle chemical property is stable, has avoided the metal to dissolve out the thing and has got into the sample, is favorable to the assurance of sample representativeness and authenticity, is favorable to improving the accuracy of testing result. 3) This device is easy and simple to handle, has realized the convenient sample of chloroethylene monomer.
Description
Technical Field
The utility model relates to a chemical production equipment, especially a sampling device.
Background
The chloroethylene monomer is colorless and easy to liquefy, has a boiling point of-13.8 ℃, forms an explosive mixture with air, and has a volume explosion limit of 3.6-33%. Vinyl chloride is a toxic substance and chronic inhalation and exposure to vinyl chloride may cause liver cancer.
A storage tank is adopted to store vinyl chloride monomer in chemical production, and the pressure of a common process pipeline and a vinyl chloride monomer sampling pipe is 0.3-0.5 MPa. The quality control of vinyl chloride production needs to master the quality condition of vinyl chloride monomer, and requires to safely and correctly collect liquid vinyl chloride monomer samples and detect various quality indexes in a laboratory.
There are two methods for collecting liquid vinyl chloride monomer samples that are currently in common use. One is to use an open sampling container to directly contain vinyl chloride monomer discharged from a sampling pipe orifice of a production device; one is to collect vinyl chloride monomer from the pipeline of the production device by using a steel cylinder (which can be lined with polytetrafluoroethylene and other materials). In the former, because the sampling container is directly communicated with the outside atmosphere, the safety and health of personnel can be endangered by a large amount of volatilization of the vinyl chloride monomer with low boiling point, and the sampling amount of the vinyl chloride monomer is difficult to accurately measure; the latter is because the steel bottle is opaque, it is difficult to observe the sample appearance and control sample amount in the sampling process, or difficult to wash, may have metal such as iron to dissolve out and influence the quality of vinyl chloride monomer, make the testing result inaccurate.
SUMMERY OF THE UTILITY MODEL
For the security that improves chloroethylene monomer sampling operation, convenience to improve the accuracy of testing result, the utility model provides a chloroethylene monomer sampling device.
The utility model provides a technical scheme that its technical problem adopted is: vinyl chloride monomer sampling device includes:
the sample bottle is used for containing a sample and is made of a transparent material;
the protective cover is sleeved on the outer wall of the sample bottle and is provided with an observation part for observing the interior of the sample bottle;
a sampling valve hermetically connected with the sample bottle through a connection structure for sampling from a vinyl chloride monomer production apparatus, the sampling valve comprising:
a valve body;
the valve tube and the valve tube base are used for being connected with the sample bottle;
and the sampling joint is used for being connected with a three-way valve on a sampling pipeline of the vinyl chloride monomer production device.
As a further improvement of the utility model, connection structure includes the bottle cap, the bottle cap top has a through-hole, the valve pipe passes the through-hole makes the valve pipe base is located inside the bottle cap, the bottle cap inner wall has the internal thread, the bottleneck of sample bottle have with interior screw-thread fit's external screw thread, the bottom of valve pipe base be fixed with the bottleneck complex sealing washer of sample bottle, when screwing during the bottle cap the sealing washer with the bottleneck of sample bottle closely laminates and realizes the gas tightness and connect.
As a further improvement, the sampling joint is provided with a filter, and the filter is used for filtering impurities such as metal particles and high polymer autopolymers. Preferably, the filter with the connection can be dismantled to the sampling joint, can use quick-operation joint, can select in a flexible way whether to use the filter during the sample.
As a further improvement, the utility model also comprises at least one safety hanging chain, one end of the safety hanging chain is connected with the safety cover and the other end of the safety hanging chain is connected with the bottle cap or the sampling valve. This scheme can guarantee operating personnel's safety when the too big bottle cap or the sample valve breaks away from the departure of leading to of pressure in the sample bottle that the misoperation appears.
As a further improvement of the utility model, the material of the sample bottle is selected from one of glass, quartz glass and high-purity quartz glass. It is easy to understand that besides the materials exemplified in the scheme, other materials meeting the requirements can be selected, and the sample in the bottle can be observed only by ensuring that the materials have certain transparency; the chemical property is stable, the acid resistance and the alkali resistance are realized, and the quality of the contained vinyl chloride monomer is not influenced; and has certain strength and is not easy to break.
As a further improvement, the protective cover is a metal net, or the protective cover is a metal cover provided with a hollow observation port. The effect of safety cover is that the sample bottle bursts and causes the injury to operating personnel when preventing to operate the mistake, except the safety cover of this scheme of adoption examinating, can also adopt the cover or the net of the fretwork of special type plastics preparation, also can adopt the safety cover that transparent material that high impact-resistant was made. It is only necessary to have sufficient strength and to be able to observe the internal conditions of the sample bottle.
As a further improvement, the sampling joint is a quick joint. Adopt quick-operation joint not only can realize sampling device and vinyl chloride monomer apparatus for producing's quick connection and dismantlement to still be convenient for the dismantlement and the installation of filter when using the filter, whether can nimble selection use the filter during the sample.
In addition, a handle can be arranged at a proper position of the sampling device, so that the sampling device can be conveniently moved. In order to enhance the stability of the sampling device and avoid impact and abrasion on the bottom of the sample bottle, a base can also be arranged at the bottom of the sample bottle.
The utility model has the advantages that: 1) the utility model discloses a whole sampling process of chloroethylene monomer sampling device goes on under sealed condition, avoids operating personnel and chloroethylene monomer to contact to adopted safety facilities such as protection casing and safe chaining, improved the security of chloroethylene monomer sampling operation. 2) Because there is sufficient security, so the sampling container can not adopt the metal material but adopt materials such as transparent glass, but direct observation sample outward appearance and nimble control sample volume in the sample prevent that the sample volume is not enough. The utility model discloses well transparent bottle can observe whether sample appearance is normal (transparency, colour, autopolymer, impurity), can observe and nimble control the sample volume of sampling in the sample to can observe magnetic stirrers motion situation, the bottle situation when discharging the chloroethylene monomer etc. in the subsequent sample preparation, can ensure the representativeness, authenticity and the accuracy of sample and subsequent testing process; just the utility model discloses sample bottle chemical property is stable, acidproof alkali-proof, easily wash, compares with metal sampling container such as present widely used steel bottle, and the metal that has avoided sampling container not the sanitization residue or container wall itself dissolves out the thing and gets into the sample and produce the pollution to the sample, is favorable to the assurance of sample representativeness and authenticity, is favorable to improving the accuracy of testing result. 3) This device is easy and simple to handle, has realized the convenient sample of chloroethylene monomer.
Drawings
Fig. 1 is a schematic structural diagram of a vinyl chloride monomer sampling device of the present invention.
Fig. 2 is a schematic view of the connection structure.
Labeled as:
1-sample bottle, 101-sample bottle inner wall, 102-sample bottle outer wall;
2-metal mesh protective cover;
301-valve body, 302-valve tube, 303-valve tube base, 304-quick coupling;
401-bottle cap, 402-through hole, 403-thread, 404-sealing ring;
5-a filter;
6-safe chaining.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1 and fig. 2, the vinyl chloride monomer sampling device of the present invention comprises: the sample bottle 1 is used for containing samples and is made of quartz glass; the metal net protective cover 2 is sleeved on the outer wall of the sample bottle 1; a sampling valve hermetically connected with the sample bottle 1 through a connection structure for sampling from a vinyl chloride monomer production apparatus, the sampling valve comprising: valve body 301, valve pipe 302, valve pipe base 303, quick-operation joint 304 are used for being connected with the three-way valve on the vinyl chloride monomer apparatus for producing sampling pipeline, can dismantle on the quick-operation joint 304 and be provided with filter 5.
The connecting structure comprises a bottle cap 401, a through hole 402 is formed in the top of the bottle cap 401, the valve pipe 302 penetrates through the through hole 402 to enable the valve pipe base 303 to be located inside the bottle cap 401, an internal thread is formed in the inner wall of the bottle cap 401, an external thread matched with the internal thread is formed in the bottle opening of the sample bottle 1, a sealing ring 404 matched with the bottle opening of the sample bottle 1 is fixed at the bottom of the valve pipe base 303, and when the bottle cap 401 is screwed, the sealing ring 404 can be tightly attached to the bottle opening of the sample bottle 1 to achieve air-tight sealing.
Still include safe chaining 6, 6 one end of safe chaining is connected metal mesh safety cover 2, and the other end is connected bottle cap 401 or the sample valve.
During sampling, the bottle cap 401 is screwed down, and pressure is applied through the bottle cap 401 to enable the valve tube base 303, the sealing ring 404 and the bottle mouth of the sample bottle 1 to be sealed without leakage; connect safe chaining 6, with quick-operation joint 304 and the three-way valve connection on the apparatus for producing chloroethylene monomer sampling tube, then open the sample valve, the mesh direct observation that can permeate metal mesh safety cover 2 chloroethylene monomer gets into sample bottle 1.
Claims (8)
1. Vinyl chloride monomer sampling device, its characterized in that includes:
the sample bottle is used for containing a sample and is made of a transparent material;
the protective cover is sleeved on the outer wall of the sample bottle and is provided with an observation part for observing the interior of the sample bottle;
a sampling valve hermetically connected with the sample bottle through a connection structure for sampling from a vinyl chloride monomer production apparatus, the sampling valve comprising:
a valve body;
the valve tube and the valve tube base are used for being connected with the sample bottle;
and the sampling joint is used for being connected with a three-way valve on a sampling pipeline of the vinyl chloride monomer production device.
2. The vinyl chloride monomer sampling device of claim 1, wherein: the connecting structure comprises a bottle cap, a through hole is formed in the top of the bottle cap, the valve pipe penetrates through the through hole to enable the valve pipe base to be located inside the bottle cap, an inner thread is formed in the inner wall of the bottle cap, a bottle opening of the sample bottle is provided with an outer thread matched with the inner thread, a sealing ring matched with the bottle opening of the sample bottle is fixed at the bottom of the valve pipe base, and when the bottle cap is screwed, the sealing ring is tightly attached to the bottle opening of the sample bottle to achieve air-tight connection.
3. The vinyl chloride monomer sampling device according to claim 1 or 2, wherein: and a filter is arranged on the sampling joint.
4. The vinyl chloride monomer sampling device of claim 3, wherein: the filter is detachably connected with the sampling joint.
5. The vinyl chloride monomer sampling device of claim 2, wherein: still include at least one safety chaining, safety chaining one end is connected the safety cover, the other end is connected the bottle cap or the sample valve.
6. The vinyl chloride monomer sampling device according to claim 1 or 2, wherein: the material of the sample bottle is selected from one of glass, quartz glass and high-purity quartz glass.
7. The vinyl chloride monomer sampling device according to claim 1 or 2, wherein: the protective cover is a metal net, or the protective cover is a metal cover provided with a hollowed-out observation port.
8. The vinyl chloride monomer sampling device according to claim 1 or 2, wherein: the sampling joint is a quick joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022238392.9U CN213714859U (en) | 2020-10-10 | 2020-10-10 | Vinyl chloride monomer sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022238392.9U CN213714859U (en) | 2020-10-10 | 2020-10-10 | Vinyl chloride monomer sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213714859U true CN213714859U (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022238392.9U Active CN213714859U (en) | 2020-10-10 | 2020-10-10 | Vinyl chloride monomer sampling device |
Country Status (1)
| Country | Link |
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| CN (1) | CN213714859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229944A (en) * | 2020-10-10 | 2021-01-15 | 宜宾海丰和锐有限公司 | Method for detecting total pH value and chloride ion content of vinyl chloride monomer |
-
2020
- 2020-10-10 CN CN202022238392.9U patent/CN213714859U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229944A (en) * | 2020-10-10 | 2021-01-15 | 宜宾海丰和锐有限公司 | Method for detecting total pH value and chloride ion content of vinyl chloride monomer |
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