Nitrogen-sealed refrigerant water tank system

Abstract

The nitrogen-sealed refrigerant water tank system comprises a refrigerant water tank, the refrigerant water tank is divided into an inner circulation water tank and an outer circulation water tank through a partition plate, the tops of the inner circulation water tank and the outer circulation water tank are communicated with each other, and the tops of the inner circulation water tank and the outer circulation water tank are respectively provided with an air inlet and an air outlet. The air inlets are connected with the nitrogen main pipe in parallel through air inlet branches, the air outlets are connected with the emptying main pipe in parallel through air outlet branches, it is guaranteed that the refrigerant water tank and pipelines are isolated from air, and oxidation and corrosion of the air to the ethylene glycol solution are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the related technical field of refrigerant equipment, especially nitrogen seal refrigerant water tank system. BACKGROUND

[0002] The present refrigerant system uses glycol water solution as -20 DEG C refrigerant system, and the refrigerant water tank is made of carbon steel plate. According to the previous continuous monitoring, it is found that the glycol solution is seriously acidified, which may cause corrosion to the pipeline and equipment, and there are many filter screens in the pipeline network, and a large amount of corrosion residues can easily block the filter screen or cause pipeline corrosion and leakage, affecting the normal supply of refrigerant. The -20 DEG C refrigerant is mainly used for temperature control of the reaction kettle in the production workshop. If the heat reaction is carried out in the reaction kettle, the temperature control cannot be carried out due to the failure of the refrigerant supply, which may cause production accidents. If the acidified glycol solution corrodes the production equipment, it may cause material pollution and quality accidents. SUMMARY

[0003] The utility model provides a nitrogen seal refrigerant water tank system, which aims at solving the problem of corrosion of production equipment caused by acidification of glycol after contact with air.

[0004] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0005] A nitrogen seal refrigerant water tank system, comprising a refrigerant water tank, the refrigerant water tank is divided into an inner circulating water tank and an outer circulating water tank which are in communication with each other by a partition, the top of the inner circulating water tank and the outer circulating water tank is respectively provided with an air inlet and an air outlet, the air inlets are connected in parallel with a nitrogen main pipe through air inlet branches, and the air outlets are connected in parallel with an emptying main pipe through air outlet branches.

[0006] Preferably, the air inlet branches each comprise an air inlet pipe, the nitrogen main pipe is communicated with the corresponding air inlet through the air inlet pipe, and each air inlet pipe is sequentially provided with a check valve, a nitrogen seal valve, a second pressure gauge and a ball valve along the air inlet direction.

[0007] More preferably, the air outlet branches each comprise an air outlet pipe, the emptying main pipe is communicated with the corresponding air outlet through the air outlet pipe, and each air outlet pipe is sequentially provided with a ball valve and a single call valve along the air outlet direction.

[0008] Further, the exhaust pressure of the single call valve is greater than the inlet pressure of the nitrogen seal valve.

[0009] Still further, the nitrogen main pipe is sequentially provided with a ball valve and a first pressure gauge along the air inlet direction.

[0010] Specifically, the emptying main pipe is provided with a third pressure gauge.

[0011] The utility model discloses a beneficial effect:

[0012] Increase nitrogen seal device on the refrigerant system refrigerant water tank, introduce nitrogen into the refrigerant water tank, make refrigerant water tank always be in slight positive pressure, ensure that refrigerant water tank and pipeline are isolated from air, reduce the oxidation of air to ethylene glycol solution, corrosion reduce the security risk that the refrigerant system supply insufficiency produces in production, reduce the corrosion that acidification's ethylene glycol solution causes to production equipment, the quality accident risk that leakage causes, avoid acidification's ethylene glycol solution to the corrosion of pipeline pipe network and the direct economic loss that bring. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is system connection schematic diagram of the utility model;

[0014] In the drawing: 1, refrigerant water tank;2, partition;3, nitrogen main pipe;

[0015] 4, inlet branch;41, inlet pipe;42, check valve;43, nitrogen seal valve;44, second pressure gauge;

[0016] 5, outlet branch;51, outlet pipe;52, single call valve;

[0017] 6, ball valve;7, first pressure gauge;8, third pressure gauge;9, emptying main pipe. DETAILED DESCRIPTION

[0018] As follows, further describe the embodiment with reference to the drawings.

[0019] As Figure 1 Shown, as a preferred embodiment 1, a nitrogen seal refrigerant water tank system, including refrigerant water tank 1, the refrigerant water tank 1 is divided into top intercommunication inner circulating water tank and outer circulating water tank by partition 2, and the top of the inner circulating water tank and outer circulating water tank is equipped with inlet and outlet respectively, and the inlet is connected in parallel with nitrogen main pipe 3 through inlet branch 4, and the outlet is connected in parallel with emptying main pipe 9 through outlet branch 5.Increase nitrogen seal device on the refrigerant water tank, introduce nitrogen into the system, make ethylene glycol solution isolated from air, reduce the corrosion of acidification's ethylene glycol solution to pipeline pipe network and production equipment and cause the security and quality accident risk, avoid the direct economic loss that the leakage of acidification's ethylene glycol solution to pipeline pipe network appears.

[0020] The gas inlet branch 4 includes a gas inlet pipe 41, the nitrogen main pipe 3 is communicated with the corresponding gas inlet through the gas inlet pipe 41, and each gas inlet pipe 41 is sequentially provided with a check valve 42, a nitrogen sealing valve 43, a second pressure gauge 44 and a ball valve 6 in the gas inlet direction. The gas inlet pipe 41 is connected to the nitrogen main pipe 3 above the refrigerant water tank 1, and after the ball valve 6, the two-way gas inlet pipe 41 enters the inner and outer circulating water tanks, and a nitrogen sealing valve 43 is installed on each of the two ways, so that when any one of the nitrogen sealing valves 43 fails, the nitrogen sealing of the water tank will not be interrupted to form negative pressure (considering that the ethylene glycol water tank is a non-pressure equipment).

[0021] The gas outlet branch 5 includes a gas outlet pipe 51, the exhaust main pipe 9 is communicated with the corresponding gas outlet through the gas outlet pipe 51, and each gas outlet pipe 51 is sequentially provided with a ball valve 6 and a single call valve 52 in the gas outlet direction. The inner and outer circulating water tanks are respectively provided with a single call valve 52, so that when the liquid level in the water tank changes, the pressure in the water tank can be maintained stable, and the exhaust capacity of the two single call valves 52 can meet the exhaust of the water tank, and the micro-positive pressure environment in the ethylene glycol water tank is not affected by the failure of any one of the single call valves 52 (considering that the ethylene glycol water tank is a non-pressure equipment).

[0022] The exhaust pressure of the single call valve 52 is greater than the inlet pressure of the nitrogen sealing valve 43, so that the exhaust capacity of the two single call valves 52 can meet the exhaust of the water tank.

[0023] The nitrogen main pipe 3 is sequentially provided with a ball valve 6 and a first pressure gauge 7 in the gas inlet direction, so as to facilitate control and observation.

[0024] The exhaust main pipe 9 is provided with a third pressure gauge 8, so as to facilitate control and observation.

[0025] As a preferred embodiment 2, the medium in the refrigerant water tank 1 is ethylene glycol, the system pressure of the water tank is about 2Kpa, the nitrogen sealing valve 43 is set to 2Kpa, the flow of the nitrogen sealing valve 43 is greater than or equal to 250m³ / h, the single call valve 52 is set to 4-5Kpa, and the flow of the single call valve 52 is greater than or equal to 250m³ / h.

[0026] The working principle of the utility model:

[0027] The utility model provides a nitrogen sealing refrigerant water tank system, increases nitrogen sealing device on refrigerant water tank, leads nitrogen into system, makes ethylene glycol solution and air isolated, reduces the risk of safety and quality accident caused by corrosion pipeline pipe network, production equipment after acidification, avoids direct economic loss caused by leakage of ethylene glycol solution corroded pipeline pipe network after acidification;

[0028] Meanwhile, the gas inlet and the gas outlet are provided with standby pipelines in parallel, so that when one line fails, the nitrogen sealing is not affected.

Claims

1. A nitrogen sealed refrigerant tank system comprising a refrigerant tank (1), characterized in that, The coolant water tank (1) is divided into an inner circulating water tank and an outer circulating water tank which are in communication with each other by a partition (2), the top of the inner circulating water tank and the outer circulating water tank is respectively provided with an air inlet and an air outlet, the air inlets are connected with the nitrogen main pipe (3) in parallel through air inlet branches (4), and the air outlets are connected with the emptying main pipe (9) in parallel through air outlet branches (5).

2. A nitrogen sealed refrigerant tank system as set forth in claim 1 wherein, The air inlet branches (4) each comprise an air inlet pipe (41), the nitrogen main pipe (3) and the corresponding air inlet are communicated through the air inlet pipe (41), and each air inlet pipe (41) is sequentially provided with a check valve (42), a nitrogen sealing valve (43), a second pressure gauge (44) and a ball valve (6) along the air inlet direction.

3. A nitrogen sealed refrigerant tank system as set forth in claim 2 wherein, The air outlet branches (5) each comprise an air outlet pipe (51), the emptying main pipe (9) and the corresponding air outlet are communicated through the air outlet pipe (51), and each air outlet pipe (51) is sequentially provided with a ball valve (6) and a single call valve (52) along the air outlet direction.

4. A nitrogen sealed refrigerant tank system as set forth in claim 3 wherein, The exhaust pressure of the single call valve (52) is greater than the air inlet pressure of the nitrogen sealing valve (43).

5. A nitrogen sealed refrigerant tank system as set forth in claim 4 wherein, The nitrogen main pipe (3) is sequentially provided with a ball valve (6) and a first pressure gauge (7) along the air inlet direction.

6. A nitrogen sealed refrigerant tank system as set forth in claim 5 wherein, The emptying main pipe (9) is provided with a third pressure gauge (8).

Images