Cold and hot using device for injection water

Abstract

The utility model discloses an injection water cold and hot using device which comprises an injection water main pipeline, an injection water branch pipeline, a water return branch pipeline, a first using pipeline, a second using pipeline and a heat exchanger. An inlet of the injection water branch pipeline is communicated with the injection water main pipeline; the water return branch is communicated with the injection water main pipeline; the first use pipeline is suitable for being provided with a first use point branch; one inlet of the second use pipeline is connected with an outlet of the first use pipeline through a first valve, the other inlet of the second use pipeline is connected with the injection water branch pipeline through a second valve, and a water return port of the second use pipeline is connected with the water return branch pipeline through a water return valve; and the second use pipeline is suitable for being provided with a second use point branch. Cold injection water and hot injection water can be selectively used at a plurality of use points, and the risk hidden danger that microorganisms are bred in a rear-section pipeline after cold water is used can be avoided.

Description

Technical Field

[0001] The utility model relates to a hot and cold use device for injection water, belonging to the technical field of injection water systems for batching in the pharmaceutical industry. Background Art

[0002] At present, water for injection is widely used as raw water in the production process of the pharmaceutical industry. The preparation, storage and distribution of water for injection should prevent the growth and contamination of microorganisms, and the design and installation of pipelines should avoid dead ends and blind pipes; pharmaceutical companies generally use a heat preservation circulation method above 70°C for storage, and when using the ingredients, the water for injection needs to be cooled to about 25°C; the Chinese patent with the authorization announcement number CN201870961U discloses a high-temperature water online rapid cooling system, in which a heat exchanger cools down multiple use points, and multiple use points can only use the cooled water for injection at the same time. When the front use point is in use and the rear use point is not in use, a long section of the rear end pipeline is cold water, which is easy to breed microorganisms and affect the safe use of water for injection. Summary of the invention

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a device for using cold and hot water for injection, which can enable multiple use points to choose to use cold water for injection and hot water for injection, and can avoid the risk of microorganisms breeding in the rear section of the pipeline after using cold water.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a device for using cold and hot water for injection, comprising:

[0005] Main water for injection pipeline;

[0006] A branch line of water for injection, the inlet of which is connected to the main line of water for injection;

[0007] A water return branch, the water return branch is connected to the injection water main line;

[0008] a first use pipeline, wherein the first use pipeline is suitable for arranging a first use point branch;

[0009] A second use pipeline, wherein an inlet of the second use pipeline is connected to an outlet of the first use pipeline through a first valve, another inlet of the second use pipeline is connected to the injection water branch pipeline through a second valve, a return port of the second use pipeline is connected to the return branch through a return valve, and a second use point branch is suitable for being arranged on the second use pipeline;

[0010] A heat exchanger, wherein the medium inlet of the heat exchanger is connected to the injection water branch pipeline, and the medium outlet of the heat exchanger is connected to the first use pipeline.

[0011] Furthermore, in order to discharge cold injection water that has not reached the temperature when using cold injection water, the hot and cold injection water use device also includes a drainage pipeline, which is connected to the drainage port of the second use pipeline and has a drainage valve on the drainage pipeline.

[0012] Further, the first use point branch is provided with a first use point valve;

[0013] And / or a second usage point valve is provided on the second usage point branch.

[0014] Furthermore, the connection between the main water for injection line and the inlet of the water for injection branch line is a first connection point, and the main water for injection line is provided with a control valve at the rear end of the first connection point for controlling the opening so as to hold the water for injection in the main water for injection line to the water for injection branch line.

[0015] Furthermore, a flow meter is provided in the injection water branch pipeline, and the flow meter is connected to the control valve to control the opening of the control valve.

[0016] Furthermore, the flow meter is connected to the second valve to control the opening of the second valve.

[0017] Furthermore, a first U-shaped bend is provided in the injection water branch pipeline, one end of the first U-shaped bend is connected to the injection water main pipeline, the other end of the first U-shaped bend is connected to the medium inlet of the heat exchanger, and the bottom of the bend of the first U-shaped bend is connected to the second valve and then connected to another inlet of the second use pipeline.

[0018] Furthermore, a second U-shaped bend is provided in the return branch, and both ends of the second U-shaped bend are respectively connected to the injection water main line, and the bottom of the second U-shaped bend is connected to the return valve and then connected to the return port of the second use pipeline.

[0019] Furthermore, the refrigerant inlet of the heat exchanger is connected to a refrigerant inlet pipeline, and a refrigerant inlet valve is provided in the refrigerant inlet pipeline;

[0020] The refrigerant outlet of the heat exchanger is connected to a refrigerant outlet pipeline, and a refrigerant outlet regulating valve is provided in the refrigerant outlet pipeline.

[0021] Furthermore, a temperature sensor is provided in the first use pipeline, and the temperature sensor is connected to the refrigerant outlet regulating valve in a linkage control manner.

[0022] After adopting the above technical scheme, the utility model has multiple ways of using water for injection: 1. The first use point and the second use point can use cold water for injection at the same time; 2. The first use point uses cold water for injection, and the second use point is in a closed state; 3. Both the first use point and the second use point use hot water for injection; 3. The first use point is in a closed state, and the second use point uses hot water for injection; 4. The first use point uses cold water for injection, and the second use point can still use hot water for injection, and hot water flows in the second use pipeline, avoiding the risk of microorganisms breeding when the rear end section of the pipeline (i.e., the second use pipeline) is cold water when the first use point is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a pipeline connection diagram of the hot and cold use device for injection water of the utility model. DETAILED DESCRIPTION

[0024] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0025] like Figure 1 As shown, a device for using cold or hot water for injection comprises:

[0026] Injection water main line 1;

[0027] An injection water branch pipeline 2, the inlet of the injection water branch pipeline 2 is connected to the injection water main pipeline 1;

[0028] A water return branch 3, the water return branch 3 is connected to the injection water main line 1;

[0029] A first use pipeline 4, on which a first use point branch 41 is suitable for being arranged;

[0030] A second use pipeline 5, one inlet of the second use pipeline 5 is connected to the outlet of the first use pipeline 4 through a first valve KV03, another inlet of the second use pipeline 5 is connected to the injection water branch pipeline 2 through a second valve KV02, a return port of the second use pipeline 5 is connected to the return branch 3 through a return valve KV04, and a second use point branch 51 is suitable for being arranged on the second use pipeline 5;

[0031] The heat exchanger 6 has a medium inlet connected to the injection water branch pipeline 2 , and a medium outlet connected to the first use pipeline 4 .

[0032] When the heat exchanger 6 is working, it can cool down the hot injection water at 80° C. to 25° C. The heat exchanger 6 can be specifically a double tube sheet heat exchanger, and the refrigerant of the heat exchanger is 7-12° C. chilled water.

[0033] The hot and cold use device for injection water may further include a drainage pipeline 7 , which is connected to the drainage outlet of the second use pipeline 5 , and a drainage valve KV05 is provided on the drainage pipeline 7 .

[0034] Specifically, the return port and the drain port of the second use pipeline 5 and the branch connection port of the second use point branch can be arranged on the same interface, and of course, they can also be connected to the same interface through a multi-way piece.

[0035] Specifically, Figure 1 As shown, the first use point branch 41 is provided with a first use point valve HV07, which is then connected to the first use point 41a; the second use point branch 51 is provided with a second use point valve HV08, which is then connected to the second use point 51a.

[0036] Specifically, Figure 1 As shown, the connection point between the inlet of the water for injection main line 1 and the water for injection branch line 2 is the first connection point 10, and the water for injection main line 1 is provided with a control valve KV01 at the rear end of the first connection point 10 for controlling the opening so as to hold the injection water in the water for injection main line 1 to the water for injection branch line 2; a normally open valve HV06 is connected between the inlet of the water for injection branch line 2 and the first connection point 10.

[0037] Specifically, Figure 1 As shown, a flow meter FT01 is provided in the injection water branch pipeline 2, and the flow meter FT01 is connected to the control valve KV01 to control the opening of the control valve KV01. The flow meter FT01 can be a float flow meter.

[0038] Specifically, Figure 1 As shown, the flow meter FT01 is connected to the second valve KV02 to control the opening degree of the second valve KV02.

[0039] Specifically, Figure 1 As shown, a first U-shaped bend 21 may be provided in the injection water branch pipeline 2, one end of the first U-shaped bend 21 is connected to the injection water main pipeline 1, the other end of the first U-shaped bend 21 is connected to the medium inlet of the heat exchanger 6, and the bottom of the bend of the first U-shaped bend 21 is connected to the second valve KV02 and then connected to the other inlet of the second use pipeline 5.

[0040] Specifically, Figure 1 As shown, a second U-shaped bend 31 may be provided in the return branch 3, and both ends of the second U-shaped bend 31 are respectively connected to the injection water main line 1, and the bottom of the second U-shaped bend 31 is connected to the return valve KV04 and then connected to the return port of the second use pipeline 5.

[0041] Specifically, Figure 1 As shown, the refrigerant inlet of the heat exchanger 6 is connected to an inlet refrigerant pipeline 61, and an inlet refrigerant valve KV13 is provided in the inlet refrigerant pipeline 61;

[0042] Specifically, Figure 1 As shown, the refrigerant outlet of the heat exchanger 6 is connected to a refrigerant outlet pipeline 62 , a refrigerant outlet regulating valve KV11 is provided in the refrigerant outlet pipeline 62 , and a valve KV12 is also provided in the refrigerant outlet pipeline 62 .

[0043] Specifically, Figure 1 As shown, a temperature sensor TE01 is provided in the first use pipeline 4, and the temperature sensor TE01 is connected to the refrigerant outlet regulating valve KV11 in a linkage control manner. The temperature sensor TE01 is a quick-card installation temperature sensor.

[0044] When the system is operating normally and neither the first usage point nor the second usage point is in use, the refrigerant inlet valve KV13 in the refrigerant inlet pipeline 61 is in a closed state and the valve KV12 is in an open state to ensure that the shell side will not be pressurized due to temperature changes, thereby reducing the risk of damage to the heat exchanger 6; the refrigerant outlet regulating valve KV11 is in a 100% open state.

[0045] Normally open valve HV06 is in the normally open state, and control valve KV01 controls the valve opening according to the linkage of flow meter FT01, and part of the hot injection water is held back to the heat exchanger 6. The second valve KV02, drain valve KV05, first use point valve HV07, and second use point valve HV08 are all closed, and the first valve KV03 and return valve KV04 are in the open state. The temperature detected by temperature sensor TE01 is not less than 70℃.

[0046] When the first and second use points use cold water for injection at the same time, open the drain valve KV05, close the return valve KV04, and control the valve KV01 according to the flow meter FT01 flow meter flow 2m 3 / h (flow demand of two use points) is adjusted to the appropriate opening, and the other valves remain in their original state; at the same time, the refrigerant outlet regulating valve KV11, valve KV12 and refrigerant inlet valve KV13 are opened to start the cooling mode. At this time, the drain valve KV05 is mainly used to discharge the cold injection water that has not reached the temperature;

[0047] After opening, the outlet refrigerant regulating valve KV11 is opened to the maximum as soon as possible. When the medium temperature reaches about 25°C, the outlet refrigerant regulating valve KV11 is directly adjusted to the set opening range according to the parameters determined during debugging, and then adjusted within this range.

[0048] After the above valves are in place, the temperature will gradually drop and normally drop to the set temperature within 1 minute. When the temperature drops to the set 25°C, the drain valve KV05 is closed, and the first use point valve HV07 and the second use point valve HV08 are opened at the same time to provide cold injection water for the first use point 41a and the second use point 51a.

[0049] At this time, if the second use point 51a stops using cold water for injection, and only the first use point 41a uses cold water for injection, the flow rate is 1m 3 / h, the opening of the control valve KV01 remains unchanged, the first valve KV03 and the second use point valve HV08 are closed, the return valve KV04 and the second valve KV02 are opened, and the second valve KV02 is set according to the flow meter FT01 flow meter flow 1m 3 / h adjusts the valve opening, and the outlet refrigerant regulating valve KV11 is directly adjusted to the set opening range according to the parameters determined when debugging a use point. At this time, the first use point 41a still continues to use cold injection water, and the other part of the hot injection water returns to the injection water main line 1 through the return valve KV04, and the flow of the rear end section of the pipeline is also hot injection water.

[0050] At this time, when the second use point 51a needs to use hot water for injection, close the return valve KV04 and open the second use point valve HV08, and the second use point 51a can use hot water for injection, preventing the growth and contamination of microorganisms.

[0051] This design also avoids the risk of microorganisms breeding when a section of the pipeline at the rear end of the first valve KV03 is filled with cold water when the first use point 41a is in use.

[0052] At this time, if the first use point 41a stops using cold water for injection, and the second use point 51a continues to need to use cold water for injection, it is only necessary to close the first use point valve HV07, and open the first valve KV03 and the second use point valve HV08 in sequence, so that the second use point 51a can use cold water for injection.

[0053] This solution can achieve the simultaneous use of hot and cold water for injection, and among the multiple use points of water for injection, the second use point 51a is not used, but the first use point 41a is used. There will be no cold water pipe at the rear end, and all pipe connections meet the 3D requirements of pharmaceutical regulations, avoiding dead ends and blind pipes caused by pipe design and installation.

[0054] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for using hot and cold water for injection, characterized in that: include: Water for injection main line (1); An injection water branch pipeline (2), wherein the inlet of the injection water branch pipeline (2) is connected to the injection water main pipeline (1); A water return branch (3), the water return branch (3) being connected to the main water for injection pipeline (1); A first use pipeline (4), wherein the first use pipeline (4) is suitable for arranging a first use point branch (41); A second use pipeline (5), wherein an inlet of the second use pipeline (5) is connected to an outlet of the first use pipeline (4) via a first valve (KV03), another inlet of the second use pipeline (5) is connected to the injection water branch pipeline (2) via a second valve (KV02), a return port of the second use pipeline (5) is connected to the return branch pipeline (3) via a return valve (KV04), and a second use point branch (51) is suitable for being provided on the second use pipeline (5); A heat exchanger (6), wherein the medium inlet of the heat exchanger (6) is connected to the injection water branch pipeline (2), and the medium outlet of the heat exchanger (6) is connected to the first use pipeline (4).

2. The device for using cold and hot water for injection according to claim 1, characterized in that: It also comprises a drainage pipeline (7), wherein the drainage pipeline (7) is connected to the drainage outlet of the second use pipeline (5), and a drainage valve (KV05) is provided on the drainage pipeline (7).

3. The device for using cold and hot water for injection according to claim 1, characterized in that: The first point-of-use branch (41) is provided with a first point-of-use valve (HV07); And / or a second point-of-use valve (HV08) is provided on the second point-of-use branch (51).

4. The device for using hot and cold water for injection according to claim 1, characterized in that: The connection point between the main water for injection pipeline (1) and the inlet of the branch water for injection pipeline (2) is a first connection point (10), and the main water for injection pipeline (1) is provided with a control valve (KV01) at the rear end of the first connection point (10) for controlling the opening so as to hold back the water for injection in the main water for injection pipeline (1) to the branch water for injection pipeline (2).

5. The device for using hot and cold water for injection according to claim 4, characterized in that: A flow meter (FT01) is provided in the injection water branch pipeline (2), and the flow meter (FT01) is connected to the control valve (KV01) to control the opening of the control valve (KV01).

6. The device for using cold and hot water for injection according to claim 5, characterized in that: The flow meter (FT01) is connected to the second valve (KV02) to control the opening degree of the second valve (KV02).

7. The device for using hot and cold water for injection according to claim 1, characterized in that: A first U-shaped bend (21) is provided in the injection water branch pipeline (2), one end of the first U-shaped bend (21) is connected to the injection water main pipeline (1), the other end of the first U-shaped bend (21) is connected to the medium inlet of the heat exchanger (6), and the bottom of the bend of the first U-shaped bend (21) is connected to the second valve (KV02) and then connected to the other inlet of the second use pipeline (5).

8. The device for using cold and hot water for injection according to claim 1, characterized in that: A second U-shaped bend (31) is provided in the water return branch (3), and the two ends of the second U-shaped bend (31) are respectively connected to the main water for injection pipeline (1), and the bottom of the bend of the second U-shaped bend (31) is connected to the water return valve (KV04) and then connected to the water return port of the second use pipeline (5).

9. The device for using hot and cold water for injection according to claim 1, characterized in that: The refrigerant inlet of the heat exchanger (6) is connected to a refrigerant inlet pipeline (61), and a refrigerant inlet valve (KV13) is provided in the refrigerant inlet pipeline (61); The refrigerant outlet of the heat exchanger (6) is connected to a refrigerant outlet pipeline (62), and a refrigerant outlet regulating valve (KV11) is provided in the refrigerant outlet pipeline (62).

10. The device for using cold or hot water for injection according to claim 9, characterized in that: The first use pipeline (4) is provided with a temperature sensor (TE01), and the temperature sensor (TE01) is connected in a linkage control manner with the refrigerant outlet regulating valve (KV11).

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