An optical fiber flow cell

Abstract

The utility model relates to the technical field of flow cell, disclose a kind of optical fiber flow cell, including pool body and optical assembly, pool body is equipped with first passageway and second passageway, first passageway and second passageway are perpendicular and intercommunicate, the both ends of first passageway are respectively provided with optical assembly, and optical assembly includes optical fiber transceiver, collimator, fixing piece, locking bolt, light transmission lens, first sealing ring and second sealing ring, by being provided with the fixing piece of slidable in the first passageway of pool body, the position of collimator connected with fixing piece is adjustable, locking bolt is cooperated with the fixing piece of sliding, the optical path can be quickly adjusted, and it has good anti-vibration, impact resistance performance;The utility model is also provided with first sealing groove in the inner wall of first passageway, and first sealing ring is arranged in first sealing groove, and fixing piece passes through first sealing ring, plays sealing effect, therefore, the utility model not only can realize the adjustment of optical path also has good sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of flow cell technology, and in particular to an optical fiber flow cell. Background Technology

[0002] Fiber optic flow cells are primarily used for online real-time monitoring of flowing liquids, and are widely used in fields such as chemical engineering, grain and oil processing, food and beverage production, brewing fermentation, environmental monitoring, and pharmaceuticals. Conventional fiber optic flow cells use a collimating lens in the light-passing channel and a sealing ring at the bottom of the aperture, which results in limitations such as non-adjustable optical path length and a limited range of applications. Furthermore, the samples under test often exhibit significant temperature variations, and integrated temperature monitoring methods are lacking.

[0003] The prior art (CN119348093A) discloses a disposable ultraviolet flow cell. The cell has a vertically oriented light-transmitting tube and a horizontally oriented liquid-transmitting tube. The central portion where the light-transmitting tube and the liquid-transmitting tube intersect perpendicularly forms a transmission space. Within this space are two symmetrically positioned cavity windows. The contact surface between each cavity window and the liquid is called the cavity window surface, and the optical path distance between the two cavity window surfaces is the actual optical path length. Fiber optic connectors are connected to both ends of the light-transmitting tube, and each fiber optic connector contains a collimating lens. The light beam flows through the light-transmitting tube to form an optical path. However, the position of the collimating lens in this patent is not adjustable, resulting in an unadjustable optical path length. Furthermore, to achieve a seal, a sealing ring is typically placed at the bottom of the hole where the collimating lens is placed, with the collimating lens pressing against the sealing ring to achieve a seal. If the position of the collimating lens is adjustable, this sealing method cannot achieve a seal, leading to liquid leakage in the liquid flow channel. Utility Model Content

[0004] The purpose of this invention is to provide an optical fiber flow cell with adjustable optical path and good sealing performance.

[0005] To achieve the above objectives, this utility model provides an optical fiber flow cell, including a cell body and optical components. The cell body has a first channel and a second channel, which are perpendicular to each other and connected. The optical components are respectively disposed at both ends of the first channel. The optical components include a fiber optic transceiver, a collimator, a fixing member, a set screw, a lens, a first sealing ring, and a second sealing ring. The fixing member is slidably inserted into the first channel. The pool body has a set hole that communicates with and is perpendicular to the first channel. The set screw passes through the set hole and abuts against the outer wall of the fixing member. The collimator and the lens are located at both ends of the fixing member. The fixing member has a light-transmitting hole that passes through both ends. One end of the collimator is inserted into the light-transmitting hole, and the other end of the collimator is connected to the fiber optic transceiver. The end face of the fixing member has a receiving groove that communicates with the light-transmitting hole. The lens is disposed in the receiving groove, and the second sealing ring is located between the lens and the bottom of the receiving groove. The inner wall of the first channel has a first sealing groove, and the first sealing ring is disposed in the first sealing groove. The fixing member passes through the first sealing ring.

[0006] As a preferred embodiment, the first channel includes a large-diameter section and a small-diameter section that are connected to each other. The diameter of the large-diameter section is larger than the diameter of the small-diameter section. The small-diameter section is connected to the second channel. The fixing member includes a first fixing section and a second fixing section. The diameter of the first fixing section is larger than the diameter of the second fixing section, so that both the first channel and the fixing member are T-shaped structures. The first fixing section is located in the large-diameter section, and the locking hole is connected to the large-diameter section. The second fixing section is located in the small-diameter section, and the length of the second fixing section is greater than the length of the small-diameter section. The first sealing ring is disposed on the small-diameter section.

[0007] As a preferred embodiment, the collimator is threadedly connected to the light-transmitting hole.

[0008] As a preferred embodiment, the fiber optic transceiver includes a connection end, the connection end includes a connecting post and a locking sleeve, the locking sleeve is rotatably sleeved on the connecting post, the end of the collimator is provided with a connection hole, the connecting post is inserted into the connection hole, and the locking sleeve is threadedly connected to the end of the collimator.

[0009] As a preferred embodiment, the outer wall of the locking sleeve is provided with anti-slip texture.

[0010] As a preferred embodiment, the optical component further includes a pressure cap and a fixing bolt. The pressure cap has a first fixing hole, and the pool body has a second fixing hole. The fixing bolt passes through the first fixing hole and is bolted to the second fixing hole. The pressure cap has a through hole, and the fiber optic transceiver is connected to the collimator through the through hole.

[0011] As a preferred embodiment, the cap includes an integrally formed first cap and a second cap. The first cap is a cylinder, and the second cap is a cuboid. The thickness of the first cap is greater than the length of the connecting end, and the diameter of the first cap is smaller than the side length of the second cap. The first fixing hole is provided on the second cap, and a second sealing groove is provided on the side of the second cap away from the first cap. A third sealing ring is provided in the second sealing groove.

[0012] As a preferred embodiment, the system also includes a temperature sensor, wherein the pool body has a detection hole communicating with the second channel, and the temperature sensor is disposed in the detection hole.

[0013] As a preferred embodiment, the system also includes a sight glass, wherein the pool body has an observation hole communicating with the connection between the first channel and the second channel, and the sight glass is disposed in the observation hole.

[0014] As a preferred embodiment, the device also includes a protective cover. The observation hole includes a first observation section and a second observation section that are connected. The second observation section is close to the connection between the first channel and the second channel. The diameter of the first observation section is larger than the diameter of the second observation section. The sight glass is disposed in the first observation section. A fourth sealing ring is provided between the sight glass and the turning point between the first observation section and the second observation section. The height of the sight glass is greater than the depth of the first observation section. The protective cover is fitted onto the sight glass.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features a sliding fastener in the first channel of the pool body, allowing for adjustable position of the collimator connected to the fastener and thus adjusting the optical path. Once adjusted, the fastener is secured by a set bolt. The combination of the set bolt and the sliding fastener enables rapid adjustment of the optical path and provides excellent vibration and impact resistance. Furthermore, the invention includes a first sealing groove on the inner wall of the first channel, within which a first sealing ring is placed. The fastener passes through the first sealing ring, providing a seal. Therefore, this invention not only allows for optical path adjustment but also offers excellent sealing performance. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the optical fiber flow cell according to an embodiment of the present invention.

[0017] Figure 2 A cross-sectional schematic diagram of the optical fiber flow cell according to an embodiment of this utility model.

[0018] Figure 3 A schematic diagram of the longitudinal section of the optical fiber flow cell according to an embodiment of this utility model.

[0019] In the diagram, 1-pool body; 101-first channel; 1011-large diameter section; 1012-small diameter section; 102-second channel; 103-first sealing groove; 104-locking hole; 105-observation hole; 1051-first observation section; 1052-second observation section; 2-fiber optic transceiver; 201-connection end; 202-connecting post; 203-locking sleeve; 2031-anti-slip texture; 3-collimator; 4-fixing component; 401-light transmission hole ; 402-Receiving groove; 403-First fixed section; 404-Second fixed section; 5-Setting bolt; 6-Light transmission lens; 7-First sealing ring; 8-Second sealing ring; 9-Gland cover; 901-Through hole; 902-First cover; 903-Second cover; 904-Second sealing groove; 10-Third sealing ring; 11-Temperature sensor; 12-Sight glass; 13-Protective cover; 14-Fourth sealing ring; 15-Connecting pipe; 16-Connecting flange. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] Example 1 like Figures 1 to 3As shown in the preferred embodiment of this utility model, an optical fiber flow cell includes a cell body 1 and optical components. The cell body 1 has a first channel 101 and a second channel 102, which are perpendicular to each other and connected. Optical components are respectively provided at both ends of the first channel 101. The optical components include an optical fiber transceiver 2, a collimator 3, a fixing member 4, a set screw 5, a light-transmitting lens 6, a first sealing ring 7, and a second sealing ring 8. The fixing member 4 is slidably inserted into the first channel 101. The cell body 1 has a set hole 104 that is connected to and perpendicular to the first channel 101. The set screw 5 passes through the set hole 104 and abuts against the first channel 101. On the outer wall of the fixing member 4, the collimator 3 and the light-transmitting lens 6 are located at both ends of the fixing member 4. The fixing member 4 is provided with a light-transmitting hole 401 that passes through both ends of the fixing member 4. One end of the collimator 3 is inserted into the light-transmitting hole 401, and the other end of the collimator 3 is connected to the fiber optic transceiver 2. The end face of the fixing member 4 is provided with a receiving groove 402 that communicates with the light-transmitting hole 401. The light-transmitting lens 6 is located in the receiving groove 402. The second sealing ring 8 is located between the light-transmitting lens 6 and the bottom of the receiving groove 402. The inner wall of the first channel 101 is provided with a first sealing groove 103. The first sealing ring 7 is located in the first sealing groove 103, and the fixing member 4 passes through the first sealing ring 7. In this embodiment, a slidable fixing member 4 is provided in the first channel 101 of the pool body 1, so that the position of the collimator 3 connected to the fixing member 4 is adjustable, thereby realizing the adjustment of the optical path. After the adjustment is in place, the fixing member 4 is tightened by the set bolt 5 to realize the positioning of the fixing member 4. The combination of the set bolt 5 and the sliding fixing member 4 allows for quick adjustment of the optical path and has good vibration and impact resistance. In this embodiment, a first sealing groove 103 is provided on the inner wall of the first channel 101, and a first sealing ring 7 is provided in the first sealing groove 103. The fixing member 4 passes through the first sealing ring 7 to play a sealing role. Therefore, this utility model can not only realize the adjustment of the optical path but also has good sealing performance.

[0025] Specifically, in this embodiment, the first channel 101 includes a large-diameter section 1011 and a small-diameter section 1012 that are connected. The diameter of the large-diameter section 1011 is larger than the diameter of the small-diameter section 1012. The small-diameter section 1012 is connected to the second channel 102. The fixing member 4 includes a first fixing section 403 and a second fixing section 404. The diameter of the first fixing section 403 is larger than the diameter of the second fixing section 404, making both the first channel 101 and the fixing member 4 T-shaped structures. The first fixing section 403 is located in the large-diameter section 1011, and the locking hole 104 is connected to the large-diameter section 1011. The second fixing section 404 is located in the small-diameter section 1012, and the length of the second fixing section 404 is greater than the length of the small-diameter section 1012. The first sealing ring 7 is disposed on the small-diameter section 1012. The fact that both the first channel 101 and the fixing member 4 are T-shaped structures makes the adjustment of the fixing member 4 more convenient, and the setting of the small-diameter section 1012 better prevents leakage.

[0026] Furthermore, the collimator 3 is threadedly connected to the light-transmitting hole 401. The outer wall of the end of the collimator 3 near the second channel 102 is provided with an external thread, and the inner wall of the light-transmitting hole 401 is provided with an internal thread. The threaded connection between the collimator 3 and the light-transmitting hole 401 is achieved through the cooperation of the external and internal threads.

[0027] In addition, the fiber optic transceiver 2 includes a connection end 201, which includes a connecting post 202 and a locking sleeve 203. The locking sleeve 203 is rotatably fitted over the connecting post 202. The collimator 3 has a connection hole at its end, into which the connecting post 202 is inserted. The locking sleeve 203 is threadedly connected to the end of the collimator 3. The inner wall of the locking sleeve 203 has an internal thread, and the outer wall of the end of the collimator 3 away from the second channel 102 has an external thread. The threaded connection between the locking sleeve 203 and the collimator 3 is achieved through the cooperation of the external and internal threads, making the connection between the fiber optic transceiver 2 and the collimator 3 stable and not easy to fall off. The outer wall of the locking sleeve 203 has anti-slip texture 2031 to facilitate the rotation of the locking sleeve 203. The connection ends 201 of the fiber optic transceiver 2 at both ends of the first channel 101 are the transmitting end and the receiving end, respectively.

[0028] In addition, the optical components of this embodiment also include a pressure cover 9 and a fixing bolt. The pressure cover 9 is provided with a first fixing hole, and the pool body 1 is provided with a second fixing hole. The fixing bolt passes through the first fixing hole and is bolted to the second fixing hole. The pressure cover 9 is provided with a through hole 901, and the fiber optic transceiver 2 is connected to the collimator 3 through the through hole 901.

[0029] The pressure cap 9 includes an integrally formed first cap 902 and a second cap 903. The first cap 902 is cylindrical, and the second cap 903 is rectangular. The diameter of the first cap 902 is smaller than the side length of the second cap 903, and the thickness of the first cap 902 is greater than the length of the connecting end 201. A first fixing hole is provided on the second cap 903, and a second sealing groove 904 is provided on the side of the second cap 903 opposite to the first cap 902. A third sealing ring 10 is provided in the second sealing groove 904. The first cap 902 is provided so that the connecting end 201 is located in the through hole 901 of the first cap 902, which protects the connection between the connecting end 201 and the collimator 3.

[0030] Example 2 The difference between this embodiment and Embodiment 1 is that, based on Embodiment 1, this embodiment provides further explanation of the optical fiber flow pool.

[0031] In this embodiment, the fiber optic flow cell also includes a temperature sensor 11. The cell body 1 has a detection hole communicating with the second channel 102, and the temperature sensor 11 is disposed in the detection hole. The temperature sensor 11 allows for real-time monitoring of the sample temperature. Furthermore, the temperature sensor 11 is threadedly connected to the detection hole. Both the detection hole and the temperature sensor 11 have a T-shaped structure. The diameter of the portion of the detection hole and the temperature sensor 11 closest to the second channel 102 is larger. A fifth sealing ring is provided between the temperature sensor 11 and the diameter transition point of the detection hole, serving a sealing function. In this embodiment, the temperature sensor 11 is a PT100 temperature probe.

[0032] The other structures in this embodiment are the same as in Embodiment 1, and will not be described again here.

[0033] Example 3 The difference between this embodiment and embodiment two is that, based on embodiment two, this embodiment further explains the optical fiber flow pool.

[0034] In this embodiment, the fiber optic flow cell also includes a sight glass 12. The cell body 1 is provided with an observation hole 105 that communicates with the connection between the first channel 101 and the second channel 102. The sight glass 12 is disposed in the observation hole 105. By providing the sight glass 12, the dynamic situation of the sample in the second channel 102 can be observed in real time.

[0035] Furthermore, the fiber optic flow cell also includes a protective cover 13. The observation hole 105 includes a first observation section 1051 and a second observation section 1052 that are connected. The second observation section 1052 is located near the junction of the first channel 101 and the second channel 102. The diameter of the first observation section 1051 is larger than the diameter of the second observation section 1052. A sight glass 12 is disposed in the first observation section 1051. A fourth sealing ring 14 is provided between the sight glass 12 and the junction of the first observation section 1051 and the second observation section 1052. The height of the sight glass 12 is greater than the depth of the first observation section 1051. The protective cover 13 is fitted onto the sight glass 12. The protective cover 13 protects the lens of the sight glass 12 from damage and contamination.

[0036] In addition, the fiber optic flow cell also includes a connecting pipe 15 and a connecting flange 16. The two ends of the second channel 102 are respectively connected to the connecting pipe 15, and the end of the connecting pipe 15 away from the cell body 1 is provided with a connecting flange 16. The connecting flange 16 facilitates connection with other devices, is safe and reliable, convenient for construction, and easy for later replacement and maintenance.

[0037] In this embodiment, the pool body 1 is a cube. Two optical components are set on two opposite sides of the pool body 1, and the sight glass 12 and temperature sensor 11 are set on the other two opposite sides of the pool body 1. Two connecting pipes 15 are connected to the two opposite bottom surfaces of the pool body 1.

[0038] The other structures in this embodiment are the same as in Embodiment 2, and will not be described again here.

[0039] In summary, this embodiment of the present invention provides an optical fiber flow cell, which adjusts the optical path by setting a slidable fixing member 4 in the first channel 101 of the cell body 1, making the position of the fixing member 4 adjustable. After adjustment, the fixing member 4 is positioned by tightening the set bolt 5 against it. The combination of the set bolt 5 and the sliding fixing member 4 allows for rapid adjustment of the optical path and provides good vibration and impact resistance. This embodiment of the present invention also provides a first sealing groove 103 on the inner wall of the first channel 101, and a first sealing ring 7 in the first sealing groove 103. The fixing member 4 passes through the first sealing ring 7 to provide a sealing effect. Therefore, this invention not only achieves optical path adjustment but also has good sealing performance.

[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An optical fiber flow cell, characterized in that, The device includes a pool body (1) and optical components. The pool body (1) has a first channel (101) and a second channel (102). The first channel (101) and the second channel (102) are perpendicular to each other and connected. The optical components are respectively disposed at both ends of the first channel (101). The optical components include a fiber optic transceiver (2), a collimator (3), a fixing member (4), a set screw (5), a light-transmitting lens (6), a first sealing ring (7), and a second sealing ring (8). The fixing member (4) is slidably inserted into the first channel (101). The pool body (1) is provided with a set hole (104) that communicates with and is perpendicular to the first channel (101). The set screw (5) passes through the set hole (104) and abuts against the outer wall of the fixing member (4). The collimator (3) and the light-transmitting lens (6) are located at both ends of the fixing member (4). The fixing member (4) is provided with light-transmitting holes (401) that pass through both ends of it. One end of the collimator (3) is inserted into the light-transmitting hole (401), and the other end of the collimator (3) is connected to the fiber optic transceiver (2). The end face of the fixing member (4) is provided with a receiving groove (402) communicating with the light-transmitting hole (401). The light-transmitting mirror (6) is located in the receiving groove (402). The second sealing ring (8) is located between the light-transmitting mirror (6) and the bottom of the receiving groove (402). The inner wall of the first channel (101) is provided with a first sealing groove (103). The first sealing ring (7) is located in the first sealing groove (103). The fixing member (4) passes through the first sealing ring (7).

2. The optical fiber flow cell according to claim 1, characterized in that, The first channel (101) includes a large-diameter section (1011) and a small-diameter section (1012) that are connected. The diameter of the large-diameter section (1011) is larger than the diameter of the small-diameter section (1012). The small-diameter section (1012) is connected to the second channel (102). The fixing member (4) includes a first fixing section (403) and a second fixing section (404). The diameter of the first fixing section (403) is larger than the diameter of the second fixing section (404), so that the... The first channel (101) and the fixing member (4) are both T-shaped structures. The first fixing section (403) is located in the large diameter section (1011). The fixing hole (104) is connected to the large diameter section (1011). The second fixing section (404) is located in the small diameter section (1012). The length of the second fixing section (404) is greater than the length of the small diameter section (1012). The first sealing ring (7) is provided on the small diameter section (1012).

3. The optical fiber flow cell according to claim 1 or 2, characterized in that, The collimator (3) is threadedly connected to the light-transmitting hole (401).

4. The optical fiber flow cell according to claim 1, characterized in that, The fiber optic transceiver (2) includes a connection end (201), the connection end (201) includes a connection post (202) and a locking sleeve (203), the locking sleeve (203) is rotatably sleeved on the connection post (202), the collimator (3) has a connection hole at its end, the connection post (202) is inserted into the connection hole, and the locking sleeve (203) is threadedly connected to the end of the collimator (3).

5. The optical fiber flow cell according to claim 4, characterized in that, The outer wall of the locking sleeve (203) is provided with anti-slip texture (2031).

6. The optical fiber flow cell according to claim 4, characterized in that, The optical component also includes a pressure cap (9) and a fixing bolt. The pressure cap (9) has a first fixing hole, and the pool body (1) has a second fixing hole. The fixing bolt passes through the first fixing hole and is bolted to the second fixing hole. The pressure cap (9) has a through hole (901), and the fiber optic transceiver (2) is connected to the collimator (3) through the through hole (901).

7. The optical fiber flow cell according to claim 6, characterized in that, The pressure cap (9) includes an integrally formed first cap body (902) and a second cap body (903). The first cap body (902) is a cylinder, and the second cap body (903) is a cuboid. The thickness of the first cap body (902) is greater than the length of the connecting end (201), and the diameter of the first cap body (902) is smaller than the side length of the second cap body (903). The first fixing hole is provided on the second cap body (903). The second cap body (903) has a second sealing groove (904) on the side away from the first cap body (902), and a third sealing ring (10) is provided in the second sealing groove (904).

8. The optical fiber flow cell according to claim 1, characterized in that, It also includes a temperature sensor (11), and the pool body (1) is provided with a detection hole that communicates with the second channel (102), and the temperature sensor (11) is located in the detection hole.

9. The optical fiber flow cell according to claim 1, characterized in that, It also includes a viewing mirror (12), and the pool body (1) is provided with an observation hole (105) that communicates with the connection between the first channel (101) and the second channel (102), and the viewing mirror (12) is disposed in the observation hole (105).

10. The optical fiber flow cell according to claim 9, characterized in that, It also includes a protective cover (13), the observation hole (105) includes a first observation section (1051) and a second observation section (1052) that are connected, the second observation section (1052) is close to the connection between the first channel (101) and the second channel (102), the diameter of the first observation section (1051) is greater than the diameter of the second observation section (1052), the sight glass (12) is disposed in the first observation section (1051), a fourth sealing ring (14) is provided between the sight glass (12) and the turning point between the first observation section (1051) and the second observation section (1052), the height of the sight glass (12) is greater than the depth of the first observation section (1051), and the protective cover (13) is sleeved on the sight glass (12).

Images